...

The purpose of this section is to compare the original 5v Flash chips with the 3.3v versions.

First all the signals from/to the Z88 need to be converted

Level Conversion

4 x GTL2003

...

NOT
REQUIRED

...

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Table of Contents

Latest NEWS

Date

From

31/08/17

Note

The 5v successor for the A29040C called A29040D has not appeared. See Future of 5v Flash Chips for more information

24/02/17

AMIC Technology

We are designing a successor for the A29040C called A29040D. This part will become available in Q2.
Its pin out , form factor and programming ID will be identical to its predecessor. So any design around the A29040C will be suitable for the A29040D.

In case you consider the 3 volt option we advise A29L040B which is also in design and will be released in Q3 this year.

All these new designs are necessary to transfer to new wafer processes allowing long term availability.
In either case we look forward to supply your design.

With best regards,

Rob
Mob: +31-6-531.589.49 – Desk +31-321-313.719 -- Skype:amicrobstuart -

Introduction

It has been around seven years since the current Flash card was designed. At that time it was done in a rush, without much research, as the AMD 1M chip was being withdrawn and the footprint for that device needed to be changed. As the footprint was a lot smaller, there was enough space on the PCB to add a 512K Flash and 1M RAM. The cost of manufacturing a PCB is based on the size of the card, if the 512K/512 Flash/RAM configuration worked or not, the cost would have been the same (although the workload in the design would have been a lot less!).

By a sheer coincidence, OZ 4.x was being developed at the same time and it was found that the INTEL chip could not run OZ 4.x but it could be used for storing files. What was NOT realised at that time was that the AMD 1M Flash chip, although was a lot better, it could also fail, when running OZ. This was not discovered until quite recently.

AMIC announced that the 512K Flash chip used was no longer being manufactured. That triggered this section to be written.

The purpose of this section is to compare the original 5v Flash chips with the 3.3v versions and to ensure that the next version addresses any outstanding issues.

PCB Improvements

There are changes that have been requested.

Real GOLD to be used on the card connector, instead of flash gold currently used.
Pads on the chips to be made larger for easier hand soldering.
4 Layer board to be considered

Comparing different Flash chips 1M x 8

General Features

Footprint	TSOP 48		40 pin TSOP
Type / Function	MX29LV800C	S29AL008J	Am29F080B-85
Datasheet Version	Dec. 22, 2011 Rev. 2.6	December 11, 2015 Rev. *K	April 1997 PRELIMINARY
VCC Voltage Range	2.7V ~ 3.6V	2.7V ~ 3.6V	5.0 Volt ± 5%
Access Time	55ns *¹ /70ns	55ns *^₁/70ns	85ns
Bus Width	X8 / x16	X8 / x16	X8
Boot Block	Top/Bottom	Top/Bottom
Sector Architecture	16KB+ 28KB+32KB + 1564KB sectors.	16KB+ 28KB+32KB + 1564KB sectors.
OTP Security Region	-	256Byte
CFI Compliant	Yes	Yes
Sector Protect/ Unprotect	Yes	Yes	Yes
Temp Sector Protect/ Unprotect	Yes	Yes	Yes
Erase Suspend/ Resume	Yes	Yes
Hardware Reset# Pin	Yes	Yes
WP# Pin	-	Yes
Manufacture ID	C2h	01h
Device ID Top/Bottom	22DAh/225Bh	22DAh/225Bh

Notes: ¹. Restricted Vcc Voltage Range, Vcc = 3.0V ~ 3.6V.

Boot sector protect WP# input

The MX29LV800C and S29AL008J flash have virtually identical footprints and pinouts.

The only significant difference being the S29AL008J devices have a hardware WP# input (pin
#14 of the 48-TSOP package and pin B3 of the 48-BGA package) to protect the boot sector. These same pins are NC on the MX29LV800C devices. This difference will be transparent if the WP# pin is left unconnected or pulled high.

Command Set and Firmware

Basic commands and write status checking methods are the same for the chips shown above.

The Read operation and Write command could be used directly without any modification. Table below shows the command set in Word mode.

Basic Commands (Word Mode)

Command		Read	Reset	Program	Chip Erase	Sector Erase	Program/Erase SuspendResume
1^st Bus Cycle	Addr	Addr	XXX	555h	555h	555h	XXX	XXX
1^st Bus Cycle	Data	Data	F0h	AAh	AAh	AAh	B0h	30h
2^_ndBus Cycle	Addr			2AAh	2AAh	2AAh
2^_ndBus Cycle	Data			55h	55h	55h
3^_rdBus Cycle	Addr			555h	555h	555h
3^_rdBus Cycle	Data			A0h	80h	80h
4^thBus Cycle	Addr			Addr	555h	555h
4^thBus Cycle	Data			Data	AAh	AAh
5^thBus Cycle	Addr				2AAh	2AAh
5^thBus Cycle	Data				55h	55h
6^thBus Cycle	Addr				555h	SA
6^thBus Cycle	Data				10h	30h

Note: SA: Sector Address

Electrical Characteristics

Read / Write Current

DC Characteristic	Condition	MX29LV800C	S29AL008J
Read Current	typ @ 5MHz	7mA	7mA
Read Current	max @ 5MHz	12mA	12mA
Standby Current	typ	0.2uA	0.2uA
Standby Current	max	5uA	5uA
Write Current	typ	15mA	20mA
Write Current	max	30mA	30mA

Input / Output Voltage

DC Characteristic	Condition	MX29LV800C	S29AL008J
Input Low Voltage	min	-0.5V	-0.5V
Input Low Voltage	max	0.8V	0.8V
Input High Voltage	min	0.7VCC	0.7VCC
Input High Voltage	max	VCC+0.3V	VCC+0.3V
Output Low Voltage	max	0.45V	0.45V
Output High Voltage	min	0.85VCC	0.85VCC
VHV Temporary Sector Unprotect Range		11.5V ~ 12.5V	8.5V ~ 12.5V

Erase and Programming Performance

AC Characteristic

Symbol	Description		MX29LV800C	S29AL008J
Taa	Random Read Access Time	VCC =3.0-3.6V	55ns	-
Taa	Random Read Access Time	VCC= 2.7-3.6V	70ns	70ns
Tce	Standby Current	VCC =3.0-3.6V	55ns	-
Tce	Standby Current	VCC= 2.7-3.6V	70ns	70ns
Tcp	Chip Enable Pulse Width	VCC =2.7-3.6V	35ns	35ns

Write Function Performance (Program and Erase)

Write Function	MX29LV800C	S29AL008J
Byte Program Time	9us	6us
Accelerated Byte/Word Programming Time	7us	-
Chip Program Time Byte Mode	9s	6.3s
Sector Erase time	0.7s	0.5s
Chip Erase time	8s	10s

Manufacturer and Device ID Command Definitions (Word Mode)

Flash Vender		Manufacturer ID		Device ID
		MX29LV800C	S29AL008J	MX29LV800C	S29AL008J
1^st Bus Cycle	Addr	555h	555h	555h	555h
1^st Bus Cycle	Data	AAh	AAh	AAh	AAh
2^_ndBus Cycle	Addr	2AAh	2AAh	2AAh	2AAh
2^_ndBus Cycle	Data	55h	55h	55h	55h
3^_rdBus Cycle	Addr	555h	555h	555h	555h
3^_rdBus Cycle	Data	90h	90h	90h	90h
4^thBus Cycle	Addr	X00h	X00h	X01h	X01h
4^thBus Cycle	Data	C2h	01h	22DAh/225Bh	22DAh/225Bh

Note.
(1) Device ID can be read out after Manufacturer ID with proper address and does not need another command sequence.
(2) Use Reset command (F0h) to return to normal read mode.

Changing 5V to 3.3V

The following points to be considered

The supply voltage to be changed from 5v to 3..3V with a voltage regulator.
Signals levels to be converted with level converters.

Level Conversion

4 x GTL2003

1

2

3

4

5

6

7

8

9

10

11

12

1314151617151617181920212223242526272829303132NOT REQUIREDGTL2003PW,118
TSSOP-20
8bit Bi-DirectionalGTL2003PW,118
TSSOP-20
8bit Bi-DirectionalA14VPPVCCVCC/WEA13A8A9A11/POE/ROEA10/CED7D6D3D4D5A17A18A19

GTL2003PW,118 TSSOP-20 8bit Bi-Directional								GTL2003PW,118 TSSOP-20 8bit Bi-Directional						NOT REQUIRED
	13	14
A16	A15	A12	A7	A6	A5	A4	A3	A2	A1	A0	D0	D1	D2	SNSL	GND	GND
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

333435363738

Comparing Spansion S29AL008J with Am29F080 1M Flash

General Features

Type / FunctionAm29F080S29AL008JVCC Voltage Range2.7V ~ 3.6VAccess Time55ns / 70nsBus WidthX8 / x16Boot BlockTop/BottomSector Architecture16KB+ 2*8KB+32KB
+ 15*64KB sectors OTP Security Region256ByteCFI CompliantYesSector Protect/UnprotectYesYesYesYesYes01h

	NOT REQUIRED				GTL2003PW,118 TSSOP-20 8bit Bi-Directional								GTL2003PW,118 TSSOP-20 8bit Bi-Directional

A14	VPP	VCC	VCC	/WE	A13	A8	A9	A11	/POE	/ROE	A10	/CE	D7	D6	D3	D4	D5	A17	A18	A19
18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38

TSOP pinouts

Am29F800B 48 pin TSOP	Am29F080B 40 pin TSOP	A29040BV 32 pin TSOP	A29040BV 32 pin TSOP	Am29F080B 40 pin TSOP	Am29F800B 48 pin TSOP
A15					A16
A14	A19			NC	BYTE#
A13	A18			NC	VSS
A12	A17			WE#	DQ15/A-1
A11	A16			OE#	DQ7
A10	A15	A11	OE#	RY/BY#	DQ14
A9	A14	A9	A10	DQ7	DQ6
A8	A13	A8	CE#	DQ6	DQ13
NC	A12	A13	I/O7	DQ5	DQ5
NC	CE#	A14	I/O6	DQ4	DQ12
WE#	VCC	A17	I/O5	VCC	DQ4
RESET#	NC	WE#	I/O4	VSS	VCC
NC	RESET#	VCC	I/O3	VSS	DQ11
NC	A11	A18	VSS	DQ3	DQ3
RY/BY#	A10	A16	I/O2	DQ2	DQ10
A18	A9	A15	I/O1	DQ1	DQ2
A17	A8	A12	I/O0	DQ0	DQ9
A7	A7	A7	A0	A0	DQ1
A6	A6	A6	A1	A1	DQ8
A5	A5	A5	A2	A2	DQ0
A4	A4	A4	A3	A3	OE#
A3					VSS
A2					CE#
A1					A0

...

All manufactures use this standard.

1M Flash 3v3

Being updated - not complete.

The following device was available 27/07/2013devices were available from04 Sep 2017

AM29F800BB-55EFSPANSION

	Device	Package	Manufacturer	Sectors
Image Modified		S29AL008J	48-Pin TSOP	CYPRESS SEMICONDUCTOR	64 Kbyte sectors
Image Added	S29AL008J70TFI020	48-Pin TSOP	CYPRESS SEMICONDUCTOR	64 Kbyte sectors
Image Added	S29AL008J70TFI020	48-Pin TSOP	CYPRESS SEMICONDUCTOR	64 Kbyte sectors

Spansion are putting their 1M AMD Flash chips on End of Life EOL.

Spansion's Data Sheets

AMIC may have had some 5v replacements A29800, A29801 these are no longer available.

The package is slightly larger, they do not fully match.

Once stocks of the Am29F080B device are depleted, there is no replacement.

...


Image Added	S29AL008J55TFIR10	48-Pin TSOP	CYPRESS SEMICONDUCTOR	64 Kbyte sectors

Spansion have been taken over by Cypress Semiconductor

512K Flash 3v3

The following device is available 23/02/17

	Device	Package	Manufacturer	Sectors
Image Modified	SST39SF040-70-4C-NHE	PLCC	MICROCHIP	4 Kbyte sectors

NOTE: The Z88 will not be able to program this chip due to the 4 Kbyte sectors. It may be programmed with an external programmer.

...

	Device	Package	Manufacturer	Sectors
	A29040C-55F	DIP 32	AMIC	64 Kbyte sectors
	A29040CL-55F	PLCC	AMIC	64 Kbyte sectors

The following devices were available 27/07/2013 02 Sep 2017

	Device	Package	Manufacturer	Sectors
	A29040B-70F	DIP 32	AMIC	64 Kbyte sectors
	A29040BLA29L040AL-70F	PLCC	AMIC	64 Kbyte sectors	3v3
Image Removed Image Added	A29040BV A29L400BUV-70F	32 48 TSOP	AMIC	64 Kbyte sectors	3v3
	AM29F040B-55JF	PLCC	SPANSION	64 Kbyte sectors
	AM29F040B-90JF	PLCC	SPANSION	64 Kbyte sectors
	A29L040L-70F	PLCC	AMIC	64 Kbyte sectors
	SST39SF040-70-4C-NHE	PLCC	MICROCHIP	Uniform 4KByte sectors
	SST39SF040-70-4I-NHE	PLCC		Uniform 4KByte sectors
	SST39SF040-70-4I-WHE	32 TSOP		Uniform 4KByte sectors

128K Flash

...

3v3

The following devices are available 27/07/2013

Device	Package	Manufacturer	Sectors
A29010L-70F	PLCC	AMIC	64 Kbyte sectors
A29010V-70F	32 TSOP	AMIC	64 Kbyte sectors
AM29F010B-70JF	PLCC	SPANSION	64 Kbyte sectors
SST39SF010A-70-4C-NHE	PLCC	MICROCHIP	Uniform 4KByte sectors
SST39SF010A-70-4C-WHE	32 TSOP	MICROCHIP	Uniform 4KByte sectors
SST39SF010A-70-4I-NHE	PLCC	MICROCHIP	Uniform 4KByte sectors
SST39SF010A-70-4I-WHE	32 TSOP	MICROCHIP	Uniform 4KByte sectors
SST39SF010A-70-4C-PHE	DIP 32	MICROCHIP	Uniform 4KByte sectors

OR Gates

We might need an OR gate for /CE, POE to POE_S

	Device	Package	Manufacturer
Image Added	MC74VHC32DR2G	SOIC	ON SEMICONDUCTOR

Conclusion

There is no life left for the 1M Flash chips.
The 512K size was the most cost effective and the 64 sector version was manufactured two companies.
128K is not a lot cheaper than the 512K and is uneconomic to use.

...

Versions Compared

Old Version 1

New Version Current

Key

Level Conversion

Latest NEWS

Introduction

PCB Improvements

Comparing different Flash chips 1M x 8

General Features

Boot sector protect WP# input