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W78CE354P Datasheet

  • W78CE354P

  • MONITOR MICROCONTROLLER

  • 422.19KB

  • 44頁(yè)

  • WINBOND

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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 I
2
C 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
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80C32 MCU core included
20 MHz maximum operating frequency
16 KB ROM for program storage
512 bytes of on-chip data RAM:
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Lower 256 bytes accessed as in the 80C32
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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:
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Two 12-bit PWM/BRM static DACs
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Fourteen 8-bit PWM static DACs
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One 12-bit PWM/BRM dynamic DAC
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Three 8-bit PWM dynamic DACs
One 6-bit ADC with 4 multiplexed analog inputs
Sync processor:
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Horizontal & vertical polarity detector
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Sync separator for composite sync
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Horizontal & vertical frequency counter
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Programmable dummy frequency generator
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Programmable H-clamp pulse output
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Safe operation area (SOA) output
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Self-test pattern output
One software I
2
C port
One DDC port (master/slave mode I
2
C, 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:
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PLCC68 (W78C/E354P), DIP48 (W78C/E354E), DIP40 (W78C/E354)
-1-
Publication Release Date: October 1996
Revision A1

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