M38203M4 Datasheet, PDF (93/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.1 I/O pins
2.1.2 Function pins
Each function pin except I/O ports is described below.
(1) Pins VCC and VSS
Power source input pins. In the high-speed mode, apply ( ^{f(XIN) MHz+} 2) V–5.5 V to the VCC pin.
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In the middle-speed mode or the low-speed mode, apply 2.5 V–5.5 V to the VCC pin.
When Ta = –40 °C to –20 °C, use the extended operating temperature version, and apply
3.0 V–5.5 V to the VCC pin.
In all modes, apply 0 V to the VSS pin.
(2) Pins VL1, VL2 and VL3
Power source input pins for LCD. Apply 0 ≤ VL1 ≤ VL2 ≤VL3 ≤ VCC of voltage to these pins.
(3) Pins XIN and XOUT
An input pin and an output pin for the main clock generating circuit.
(4) RESET pin
The 3820 group is reset internally by keeping the level of this pin at “L” for 2 µs or more. Reset state
is released by returning the level of this pin to “H”.
(5) Pins SEG0 to SEG15
Segment signal output pins for LCD.
(6) Pins COM0 to COM3
Common signal output pins for LCD.
3820 GROUP USER’S MANUAL
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