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add to chips list in docs

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Tom Nisbet 2024-05-05 00:52:09 -04:00
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25
docs/_docs/design-250-prom-specific-code.md
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@ -49,6 +49,7 @@ different chip technologies.
This PromDevice28C module is enabled by default to program 28C256 EEPROMS. To use a
different module, make the following edits:
* In configure.h, comment out the #define PROM_IS_28C line
* Uncomment one of the other PROM_IS_ lines to compile a different module
* In TommyPROM.ino, uncomment or add a new PromDevice declaration for the specific chip
@ -195,7 +196,7 @@ used to enable and disable SDP from the command line.
like the DUMP command, will also toggle _CE_. If the programming voltage is asserted,
these other commands can inadvertently cause a write operation. Be sure to assert the
programming voltage, issue the needed write commands, and then remove the high voltage
before issuing and additional commands that may corrupt the data.
before issuing any additional commands that may corrupt the data.
### M27C256
@ -218,7 +219,7 @@ This chip can only be erased with UV light, so the erase command is not supporte
This is an older version of the M27C256. Pin connections are the same, but for programming Vcc=6V and Vpp=12.5V. The programming pulse width is 1ms instead of 100us, and the programming algorithm uses an overwrite pulse equal to 3ms * the number of program pulses written.
### W27C257 and W27C512
### W27C257, W27E257 and W27C512
The Winbond W27C257 and W27E257 appear to be identical 32Kx8 EEPROMs. The 27C version
has been tested. The Winbond W27C512 is a 64Kx8 EEPROM with no dedicated _VPP_ pin.
@ -230,7 +231,7 @@ _CE_. To erase the chip, assert the voltages on _VPP_ and _A9_ and then issue t
_Erase_ command from the terminal.
Unlike the 257 chips, the W27C512 does not have a dedicated pin for the programming
voltage and instead uses the _OE_ pin to place the chip in programming mode. The verify
voltage and instead uses the 12V on _OE_ pin to place the chip in programming mode. The verify
operation requires that the _OE_ pin be switched to _LOW_ and there is no hardware support
for this, so the current code supports the 512 chip by doing a single write cycle with no
verify.
@ -303,11 +304,17 @@ pulsing _WE_.
|W27C512 |Winbond |EEPROM |27 |Continual 12V or 14V for program/erase,VPP on OE|
|AM28F512 |AMD |EEPROM | ||
|AM29F040 |AMD |EEPROM | ||
|AMS29AF010| | | ||
|AMS29AF010|AMS | | ||
|W29C040 |Winbond |Flash | ||
|2764 |SEEQ |EPROM | ||
|W29C040 |Winbond | | ||
|MBM2732A |Fujitsu |EPROM | ||
|M5L2764K |Mitsubishi |EPROM | ||
|B2732 |Intel |EPROM | ||
|D2764 |Intel |EPROM | ||
|D27128 |Intel |EPROM | ||
|TMS2564 |TI |EPROM | ||
|AM2764-2 |AMD |EPROM | ||
|MCM68766 |Motorola |EPROM | ||
# Chip Manufacturers
@ -317,9 +324,13 @@ pulsing _WE_.
|AMD - Advanced Micro Devices |AM ||
|Atmel |AT |Aquired by Microchip|
|CSI - Catalyst Semiconductor |CAT |Aquired by ON Semiconductor|
|Fujitsu |MBM ||
|Intel |i ||
|Mitsubishi |M5L ||
|Motorola |MCM ||
|Seeq Technology | |Aquired by LSI Logic|
|SST - Silicon Storage Tech |ST |Aquired by Microchip|
|ST Microelectronics |M ||
|Texas Instruments |TMS ||
|Winbond |W ||
|Xicor |X ||

10
docs/_docs/design-350-tommyprom32-pcb.md
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@ -28,17 +28,17 @@ Two power inputs and switches are provided to support older flash and EEPROM chi
Note that some of the photos below show the initial version of the TommyPROM32 board that only contained a single switchable voltage. The version 2.0 boards added a second switchable Vpp voltage section with multiple _VPP Output_ pins. The _5V_ and _Vpp in low_ pins are now adjacent so that a wire is not needed for the common case where Vpp low is set to 5V. There are also some general-purpose 5v, GND, and interconnect pins.
### WE27C257
### W27C257
The photo below shows the WE27C257 set up for programming. The _VPP in Low_ signal is connected to _VCC_ and the _VPP in High_ signal is using 12V from an external power supply. The _VPP Out_ signal is connected to the chip's VPP on pin 1. The chip is in programming mode when the slide switch is set to the _High_ position and is in read mode when in the _Low_ position.
The photo below shows the W27C257 set up for programming. The _VPP in Low_ signal is connected to _VCC_ and the _VPP in High_ signal is using 12V from an external power supply. The _VPP Out_ signal is connected to the chip's VPP on pin 1. The chip is in programming mode when the slide switch is set to the _High_ position and is in read mode when in the _Low_ position.
[![TommyPROM32 WE27C257 programming](images/TommyPROM32-27C257-pgm-500.jpg)](images/TommyPROM32-27C257-pgm.jpg)
[![TommyPROM32 W27C257 programming](images/TommyPROM32-27C257-pgm-500.jpg)](images/TommyPROM32-27C257-pgm.jpg)
To erase the WE27C257 chip, the external power supply is providing 14V and the _VPP Out_ is connected to the chip's _VPP_ and _A9_ pins.
To erase the W27C257 chip, the external power supply is providing 14V and the _VPP Out_ is connected to the chip's _VPP_ and _A9_ pins.
Note the the top picture showed the version 1.0 board and a jumper wire was needed to connect +5V to the _Vpp in low_ pin. The newer board, shown below, has a jumper cap to make this connection, so no additional wire is needed.
[![TommyPROM32 WE27C257 erase](images/TommyPROM32-27C257-erase-500.jpg)](images/TommyPROM32-27C257-erase.jpg)
[![TommyPROM32 W27C257 erase](images/TommyPROM32-27C257-erase-500.jpg)](images/TommyPROM32-27C257-erase.jpg)
### M27C256