...
| Date | From | |
|---|---|---|
| 24/02/17 | AMIC Technology | We are designing a successor for the A29040C called A29040D. This part will become available in Q2. 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. With best regards, Rob |
Design Considerations
First all the signals from/to the Z88 need to be converted
Level Conversion
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
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
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | |||
| GTL2003PW,118 TSSOP-20 8bit Bi-Directional | GTL2003PW,118 TSSOP-20 8bit Bi-Directional | NOT | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
...
Comparing Spansion S29AL008J with Am29F080 1M Flash
General Features
| Type / Function |
|---|
| MX29LV800C | S29AL008J |
|---|---|
VCC Voltage Range | 2.7V ~ 3.6V |
| 2.7V ~ 3.6V | ||
Access Time | 55ns *1 /70ns | 55ns *1 /70ns |
Bus Width | X8 / x16 | X8 / x16 |
Boot Block | Top/Bottom | Top/Bottom |
Sector Architecture | 16KB+ 2*8KB+32KB | 16KB+ 2*8KB+32KB |
sectors. | ||
OTP Security Region | - | 256Byte |
CFI Compliant | Yes | Yes |
Sector Protect/ | Yes | Yes |
Temp Sector Protect/ | Yes | Yes |
Erase Suspend/ | 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.
TSOP pinouts
48 pin TSOP | 40 pin TSOP | 32 pin TSOP | A29040BV 32 pin TSOP | Am29F080B 40 pin TSOP | Am29F800B 48 pin TSOP | 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 |
...
| Device | Package | Manufacturer | Sectors | ||
|---|---|---|---|---|---|
 | AM29F800BB-55EF | 48-Pin TSOP | SPANSION | 64 Kbyte sectors |
Spansion are putting their 1M AMD Flash chips on End of Life EOL.
...
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.
512K Flash 5v
The following device is available 23/02/17
| Device | Package | Manufacturer | Sectors | ||
|---|---|---|---|---|---|
| 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 | ||
 | A29040CL-55F | PLCC | AMIC | 64 Kbyte |
The following devices were available 27/07/2013
| Device | Package | Manufacturer | Sectors | ||
|---|---|---|---|---|---|
| A29040B-70F | DIP 32 | AMIC | 64 Kbyte sectors | ||
| A29040BL-70F | PLCC | AMIC | 64 Kbyte sectors | |
 | A29040BV-70F | 32 TSOP | AMIC | 64 Kbyte sectors | |
| 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 |
...
| 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 |
Conclusion
...