M38197MA Datasheet, PDF (15/60 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3819 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(13) Ports P8, PA
Local
data bus
Data bus
S/P switch register
Dimmer signal
(Note)
Directionregister
Port latch
V
read
(14) Port PB0
(15) Port PB1
Data bus
Port XC switch
bit
Direction
register
Port latch
Data bus
Oscillation circuit
Port PB1
Port XC switch bit
Port XC switch
bit
Direction
register
Port latch
(16) Port PB2
Sub-clock generating circuit input
Data bus
Direction
register
Port latch
V : High-breakdown-voltage P-channel transistor
Note: The dimmer signal sets the Toff timing.
Fig. UA-5 Port block diagram (4)
D-A conversion output
D-A output enable bit
15