(China (Mainland))
Product Summary
The UM82C088F is a PC/XT integration chip. It is designed to function as the peripheral controller for 8088 microprocessors in an IBM PC/XT compatible computer. The UM82C088F is implemented in 1.5u CMOS technology and is packaged in a 100 pin plastic flat package.
Parametrics
UM82C088F absolute maximum ratings: (1)Input Low Voltage: -0.3V to +0.8V; (2)Inout High Voltage: +2.2V to VCC+0.3V; (3)Output low voltage: +0.4V; (4)Output High Voltage: +3.0V; (5)PG input Hysteresis: 0.25V; (6)Operating supply Current: 50mA.
Features
UM82C088F features: (1)Fully IBM-PC/XT compatible; (2)82C84 Clock generator with 2 clock-inputs to generate the CPU clock. These are 14318 MHz and 30MHz which will support 4.77 MHz to 10 MHz CPU clocks with 1/3 duty cycle; (3)82C88 Bus controller; (4)82C37 4 channel DMA controller, channel 0 is used for DRAM refresh; (5)74280 Parity check and generator; (6)74670 4-bit page register for DMA; (7)Wait state logic; (8)NMI control logic; (9)ROM decoder for one 2764 and one 27256; (10)RAM decoder for 4164 or 41256 DRAM; (11)H/W and S/W CPU speed change and indicator; (12)Built-in delay line for RAS, CAS; (13)low power consumption: less than 300mW at 10 MHz CPU speed; (14)Small PCB size: 100-pin plastic flat package.
Diagrams
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