m3819 Renesas Electronics Corporation., m3819 Datasheet - Page 27

• Manufacturer Part Number: m3819
• Description: Mitsubishi 8-bit Single-chip Microcomputer 740 Family / 38000 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 4 Port block diagram (1)
Note: The dimmer signal sets the Toff timing.
: High-breakdown-voltage P-channel transistor
(1) Ports P0, P1
(2) Ports P1
(3) Ports P2
(4) Ports P2
0
4
2
–P2
–P2
–P1
0
7
, P1
7
3
, P4
Blanking signal
for key-scan
1
Blanking signal
for key-scan
Local data bus
1
, P6
Data bus
Data bus
0
Data bus
Data bus
, PB
3
Shift signal from previous stage
Shift signal to next stage
Shift signal from previous stage
Shift signal to next stage
Shift signal from previous stage
Shift signal to next stage
Direction
register
Port latch
D/P switch register
S/D switch register
Port latch
Dimmer signal
Port latch
Port latch
Dimmer signal
Dimmer signal
(Note)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(Note)
(Note)
MITSUBISHI MICROCOMPUTERS
V
EE
V
EE
V
EE
3819 Group
13