Toshiba 29VH27D, Service Manual

Page: 11 / 158

6
Electronic Signature
– Manufacturer Code: 20h
– Device Code: 41h
14.2.3.Connections
DIP connections LCC Connections TSOP Connections
Signal Names
A0-A18 Address Inputs
Q0-Q7 Data Outputs
E Chip Enable
G Output Enable
V
pp
Program Supply
V
cc
Supply Voltage
V
ss
Ground
14.3.24LC32A
14.3.1.Description
The Microchip Technology Inc. 24LC32A is a 4K x 8 (32K bit) Serial Electrically Erasable PROM
capable of operation across a broad voltage range (2.5V to 6.0V). It has been developed for advanced,
low power applications such as personal communications or data acquisition. The 24LC32A also has a
page-write capability of up to 32 bytes of data. The 24LC32A is capable of both random and sequential
reads up to the 32K boundary. Functional address lines allow up to eight 24LC32A devices on the
same bus, for up to 256K bits address space. Advanced CMOS technology and broad voltage range
make this device ideal for low-power/ low-voltage, nonvolatile code and data applications. The
24LC32A is available in the standard 8-pin plastic DIP and both 150 mil and 200 mil SOIC packaging.
14.3.2.Features
• Single supply with operation down to 2.5V
• Maximum write current 3 mA at 6.0V
• Standby current 1 mA max at 2.5V
• 2-wire serial interface bus, I 2 CÔ compatible
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• Self-timed ERASE and WRITE cycles
• Power on/off data protection circuitry
• Hardware write protect
• 1,000,000 Erase/Write cycles guaranteed
• 32 byte page or byte write modes available