UPD78P324 Datasheet, PDF (9/80 Pages) NEC – 16-/8-Bit Single-Chip Microcomputers

(P20) NMI
INTP0-INTP5
(P21-P26)
PROGRAMMABLE
INTERRUPT
CONTROLLER
(P80) TO00
(P81) TO01
(P82) TO02
(P83) TO03
(P84) TO10
(P85) TO11
(P27) T1/INTP6
TINER/COUNTER UNIT
(REAL TIME PULSE UNIT)
(P34) SCK
(P32) SO/SB0
(P33) SI/SB1
(P30) TXD
(P31) RXD
SERIAL INTERFFACE
(SBI)
(UART)
EXU
Main RAM
GENERAL
REGISTERS
128 bytes
&
DATA
MEMORY
128 bytes
ALU
MICRO
SEQUENCE
CONTROL
MICRO ROM
PROM
Peripheral RAM
BCU
32K
bytes
ECC
768
bytes
SYSTEM
CONTROL
&
BUS
CONTROL
&
PREFETCH
CONTROL
X1
X2
RESET
ASTB
RD
WR
TAS
TMD
EA/VPP*
A8-A15 (P50-P57)
AD0-AD7 (P40-P47)
A0-A16*
D0-D7*
PGM*
CE*
OE*
A/D CONVERTER
(10 BITS)
WDT
PORT
Remark *: When in PROM programming mode