I/O Board; I/O Board Specifications - NEC Versa 2400 Series Service Manual

2-10 General Specifications

I/O BOARD

The following table lists I/O board specifications.
ITEM
Clock
ROM
System Chip Set
Super I/O
Keyboard Controller
Micro Controller
RCT Battery
Audio
Amplifier
Table 2-7 I/O Board Specifications
SPECIFICATIONS
Crystal 14.318MHz, DIP Type
Crystal 32.768KHz, DIP Type
Crystal 4MHz, DIP Type
Generator:
AV9154-43, SOP 16 Pin
Flash ROM for BIOS
256K x 8, 150ns
UMC UM8886BN, 208 Pin, PQFP
NS87336, 100 Pin, PQFP
Mitsubishi 38813M4, 64 Pin, QFP
PIC16C62, 28 Pin, SOIC
VARTA 60mA, 3.6V NiMH Battery
ES17888 Sound Chip, 100 Pin, PQFP
ROHM BA77786FS, 25 Pin, SOIC