General Description
The Am29F080 is an 8 MBit, 5.0 volt-only memory organised as 1,048,576 bytes. The 8 bits of data appear on DQ0-DQ7.The Am29F080 is offered in 40 pin TSOP and 44-pin SO packages. This device designed to be programmed in-system with the standard 5.0 volt Vcc supply. A 12.0 volt Vpp is not required to program or erase operations. This device can also be programmed in standard EPROM programmers.
Modification to Z88 Extender Card
To program this chip, the 32 pin DIL header is changed to the 40 pin TSOP. 3 tracks from the 32 pin header are cut in-between the 2 off 34 way connectors and a 3 pole change over switch is used. The holes of the 2 off 34 way connectors (pins 1-18) are used to connect and mount the switch on a small strip-board.
To Z88 Card | GQ-4X | ||||||
34 way connector | 32 pin DIL | Centre | Signal | ||||
---|---|---|---|---|---|---|---|
2 | 17 | 1 | 31 | 31 | /WE | ||
17 | 2 | 31 | 1 | 1 | A18 | ||
1 | 18 | A19 | Vcc | A19 | A19 | ||
1M | 512K | 1M | 512K | DIL | HDR
Components Required
Component | Qty | Part No | Price |
---|---|---|---|
9 way header | 4 | ||
3 pole c/o switch | 1 | ||
strip-board | 1 |
Extended Header
Do not connect the EPROM Programmer to the Host computer yet.
- Plug in the Z88 Memory card into the Z88 Extender card
- Plug in the A19 lead into the Header connector on the EPROM Programmer
- Plug in the Z88 Extender card into the programmer's ZIF socket.
The Z88 Memory card is used just to get the correct spacing of the two cards but is removed before power is applied to the programmer.
- Remove the Z88 Card
- Connect the power and parallel cable to the EPROM programmer
- Connect to the PC and
- Initialise the EPROM Programmer
Select the chip you wish to use. In this example we are using the Am29F080 1M Flash TSOP chip.
Now plug in the Z88 Card.
Here is the screen for this chip.
DO NOT take any notice of the switch settings for the physical settings given for the TSOP40B/PSOP44.
Read the commands
- Chip type
- Read Data
- Verify Data