Rolsen 25D19MA, Руководство по обслуживанию

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SERVICE MANUAL
· One general-purpose 8-bit timer/counters with interval timer mode (timer A)
A/D Converter
· Two analog input pins; 4-bit resolution
· 3.125
μ s conversion time (8-MHz CPU clock)
Pulse Width Modulation Module
· 14-bit PWM with one-channel output (push-pull type)
· PWM counter and data capture input pin
· Frequency: 5.859 kHz to 23.437 kHz with a 6-MHz CPU clock
On-Screen Display (OSD)
· Video RAM: 252’12 bits
· Character generator ROM: 256 ’ 18 ’ 16 bits (256 display characters: fixed: 2, variable: 254)
· 252 display positions (12 rows ’ 21 columns)
· 16-dot ’18-dot character resolution
· 16 different character sizes
· Eight character colors
· Vertical direction fade-in/fade-out control
· Eight colors for character and frame background
· Halftone control signal output; selectable for individual characters
· Synchronous polarity selector for H-sync and V-sync input
Oscillator Frequency
· 5-MHz to 8-MHz external crystal oscillator
· Maximum 8-MHz CPU clock
Operating Temperature Range
· - 20°C to + 85°C
Operating Voltage Range
· 4.5 V to 5.5 V
Package Type
· 42-pin SDIP
19