M38203M4 Datasheet, PDF (34/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3820 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(17) Port P70
Port selection/Pull-up control
Port XC switch bit
Direction register
Data bus
Port latch
(18) Port P71
Port selection/Pull-up control
Port XC switch bit
Direction register
Data bus
Port latch
(19) COM0 –COM3
Oscillation circuit
Port P71
Port XC switch bit
VL3
VL2
The gate input signal of each transistor is
VL1
controlled by the LCD duty ratio and the
bias value.
VSS
Fig. 14 Port block diagram (3)
Sub-clock generating circuit input
(20) SEG0 – SEG15
VL2/VL3
VL1/VSS
The voltage applied to the sources of
P-channel and N-channel transistors
is the controlled voltage by the bias
value.
1-18
3820 GROUP USER’S MANUAL