W78C354 Datasheet, PDF (1/44 Pages) Winbond – MONITOR MICROCONTROLLER

Preliminary W78C354
MONITOR MICROCONTROLLER
GENERAL DESCRIPTION
The W78C354 is a high-performance monitor microcontroller that is based on the embedded 80C32
microcontroller core. The W78C354 includes a 16 KB ROM, 512 byte internal data RAM, a 6-bit A/D
converter, two 12-bit and fourteen 8-bit PWM static DACs, one 12-bit and three 8-bit PWM dynamic
DACs, a sync processor, an I²C port, a DDC port, a watchdog timer, and glue logic specially designed
for monitor applications.
The W78C354 is suitable for monitors applying VESA DDC1/DDC2B/DDC2B+. This product's high
level of integration and the availability of a one-time programmable (OTP) flash PROM version(the
W78E354) help to reduce unit costs, development costs, and development time.
FEATURES
• 80C32 MCU core included
• 20 MHz maximum operating frequency
• 16 KB ROM for program storage
• 512 bytes of on-chip data RAM:
− Lower 256 bytes accessed as in the 80C32
− Higher 256 bytes accessed as an external data memory via "MOVX @Ri".
• One SPI/RS232 port (80C32 standard serial port)
• One external interrupt input
• Two timers/counters
• One 8-bit auto-reload timer for software time base
• PWM DACs:
− Two 12-bit PWM/BRM static DACs
− Fourteen 8-bit PWM static DACs
− One 12-bit PWM/BRM dynamic DAC
− Three 8-bit PWM dynamic DACs
• One 6-bit ADC with 4 multiplexed analog inputs
• 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) output
− Self-test pattern output
• One software I²C port
• One DDC port (master/slave mode I²C, supports DDC1/DDC2B/DDC2B+)
• Watchdog timer
• Moire cancellation
• Two 15 mA output pins for driving LED
• Power-low reset
• OTP type: W78E354 (16 KB flash PROM)
• Three package types:
− PLCC68 (W78C/E354P), DIP48 (W78C/E354E), DIP40 (W78C/E354)
Publication Release Date: October 1996
-1-
Revision A1