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CHAPTER 1 OVERVIEW
User’s Manual U12697EJ3V0UM
1.4 Block Diagram
INTP2/NMI
INTP0, INTP1,
INTP3 to INTP5
Programmable
interrupt
controller
Real-time
output port
Timer/event
counter 6 (8 bits)
Timer/event
counter 5 (8 bits)
Timer/event
counter 2 (8 bits)
Timer/event
counter 1 (8 bits)
Timer/event
counter (16 bits)
Watch timer
Watchdog
timer
TI00
TI01
TO0
TI1
TO1
TI2
TO2
RTP0 to RTP7
Clock output
control
AV
DD
AV
SS
PCL
BUZ
ANI0 to ANI7
D/A
converter
A/D
converter
ANO0
NMI/INTP2
AV
SS
AV
REF1
ANO1
78K/IV
CPU core
ROM
RAM
Baud-rate
generator
Baud-rate
generator
RxD1/SI1
TxD1/SO1
ASCK1/SCK1
RxD2/SI2
TxD2/SO2
ASCK2/SCK2
SI0/SDA0
Note 1
SO0
SCK0/SCL0
Note 1
Bus I/F
UART/IOE1
RD
ASTB
WR
WAIT
AD0 to AD7
A8 to A15
A16 to A19
Port 1
P10 to P17
Port 0
Port 2
P20 to P27
Port 3
P30 to P37
Port 4
P40 to P47
Port 5
P50 to P57
Port 6
P60 to P67
Port 7
P70 to P72
Port 12
P120 to P127
Port 13
P130,P131
Buzzer output
System control
RESET
XT2
X1
XT1
X2
V
SS0
, V
SS1
V
DD0
, V
DD1
TEST/V
PP
Note 2
Clocked
serial
interface
UART/IOE2
EXA
P00 to P05
P03/INTP3
Notes 1.
The SDA0 and SCL0 pins are provided only for the
µ
PD784225Y Subseries.
2.
The V
PP
pin is provided only for the
µ
PD78F4225 and 78F4225Y.
Remark
The internal ROM and RAM capacity varies depending on the product.