3825_03 Datasheet, PDF (32/339 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

(8) Ports P54, P56
Data bus
Direction
register
Port latch
Pull-up control
Pulse output mode
Timer output
(10) Port P6
CNTR0 interrupt input
P54 only
Pull-up control
Direction
register
Data bus
Port latch
(12) Ports P71–P77
A-D conversion input
Analog input pin selection bit
Port selection/Pull-up control
Data bus
Direction
register
Port latch
(14) Port P81
Port selection/Pull-up control
Port XC switch bit
Direction
register
Data bus
Port latch
Sub-clock generating circuit input
(16) SEG0–SEG17
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.
Fig. 12 Port block diagram (2)
MITSUBISHI MICROCOMPUTERS
3825 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(9) Ports P55, P57
Pull-up control
Data bus
Direction
register
Port latch
CNTR1 interrupt input
A-D trigger interrupt input
(11) Port P70
Data bus
Direction
register
Port latch
(13) Port P80
Port selection/Pull-up control
Port XC switch bit
Direction
register
Data bus
Port latch
Oscillation circuit
Port P81
Port XC switch bit
(15) COM0–COM3
VL3
VL2
VL1
The gate input signal of each
transistor is controlled by the
LCD duty ratio and the bias
value.
VSS
1-16