Model 40x Wms: Backplane chip 24c04 on Wms/IGT - repost

[cfh]

reposted from old NLG site...

On the williams dotmation and model 400/401 bankplane
board, there's a serial EEPROM 8 pin chip. This is the same chip
IGT uses on their "motherboard". it contains game type info, so
if you try and swap a new game in to the slot, the game knows.

Anyway i highly suggest picking up these chips are they are
currently available. i don't know how long that will be the case.
When replacing, always use an 8 pin socket.

Manufacturer part# 24c04 or 24c04LI (PDIP package)
Mouser part# 698-CAT24C04LI-G
Price $0.42

Access Time: 900 ns
Interface Type: I2C
Manufacturer: Catalyst Semiconductor
Maximum Clock Frequency: 0.4 MHz
Maximum Operating Current: 2 mA
Maximum Operating Temperature: 85 C
Memory Size: 4 Kbit
Minimum Operating Temperature: - 40 C
Operating Supply Voltage: 2.5 V or 3.3 V or 5 V
Organization: 512 x 8
Package / Case: PDIP
Packaging: Tube
Product Category: EEPROMs - Serial
Supply Voltage (Max): 5.5 V
Supply Voltage (Min): 1.8 V