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.

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)