W78E374B
MONITOR MICROCONTROLLER
Publication Release Date: January 1999
- 1 -
Revision A2
GENERAL DESCRIPTION
The W78E374 is an MCU with embedded 8031 microcontroller core. The W78E374
includes a 16 KB code memory, 384-byte internal data RAM, a 4-bit A/D converter,
Watchdog Timer, sync Processor, DDC port, PWM output, dynamic waveform
generator, and the other logic functions that are designed for the applications of
multi-sync computer monitor controller.
The MCU is also available in mask type, W78C374. The W78E374 is especially
useful in the engineering and pre-production stage of the monitor development. It
provides the best time to market solution for your product.
FEATURES
80C31 MCU core included
16 KB of Flash memory
384 bytes of on-chip data RAM
One external interrupt input
Two timers/counters
PWM Outputs:
- Eight 8-bit SDACs (Static PWM output)
- Three 8-bit DDACs (Dynamic PWM output)
Four channels of 4-bit Analog to Digital converter
Sync processor:
- Horizontal & vertical polarity detector
- Sync separator for composite sync
- Horizontal & vertical frequency counter
- Programmable dummy frequency generator
- Programmable H-clamp pulse output
- Safe operation area (SOA) interrupt
One DDC port (master/slave mode I
2
C, supports DDC1/DDC2B/2Bi/DDC2B+)
Watchdog timer
Two 15 mA output pins for driving LED
Power-down reset
Clock=8MHz~10MHz (instruction cycle=1.34MHz~1.67MHz)
Three package types:
- PLCC44 (W78E374BP), DIP32 (W78E374B)
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