UPD78323 NEC, UPD78323 Datasheet - Page 8

• Manufacturer Part Number: UPD78323
• Description: 16/8-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

Note The PD78323 does not incorporate ROM.
(P27) TI/INTP6
(P32) SO/SB0
INTP0–INTP5
(P21–P26)
(P33) SI/SB1
(P80) TO00
(P81) TO01
(P82) TO02
(P83) TO03
(P84) TO10
(P85) TO11
(P34) SCK
(P31) R
(P20) NMI
(P30) T
X
X
D
D
TIMER/COUNTER UNIT
(REALTIME PULSE UNIT)
SERIAL INTERFACE
PROGRAMMABLE
INTERRUPT
CONTROLLER
(UART)
(SBI)
A/D CONVERTER
REGISTERS
Main RAM
GENERAL
MEMORY
128 bytes
128 bytes
MICRO SEQUENCE
CONTROL
DATA
(10 BIT)
&
MICRO ROM.
EXU
ALU
WDT
ROM/RAM
Peripheral
ROM
bytes
bytes
RAM
32K
768
Note
PREFETCH
CONTROL
CONTROL
CONTROL
SYSTEM
PORT
BCU
BUS
&
&
X1
X2
RESET
ASTB
RD (P90)
WR (P91)
TAS (P92)
TMD (P93)
EA
A8–A15 (P50–P57)
AD0–AD7 (P40–P47)
V
V
DD
SS