NEC PD750008 - Manual (Page 25)

5
CHAPTER 1 GENERAL
1.4 BLOCK DIAGRAM
Notes 1. The program counter for the µPD750004 consists of 12 bits, 13 bits for the µPD750006 and
µPD750008, and 14 bits for the µPD75P0016.
2. The ROM capacity depends on the product.
3. ( ) : µPD75P0016
TI0
PTO0
PTO1
BUZ
SI/SB1
SO/SB0
SCK
INT0
INT1
INT2
Basic interval timer/
watchdog timer
INTBT
Timer/event
counter
Timer counter
Wach timer
INTT1
Clocked serial
interface
INTCSI
Interrupt
control
Program
counter
Note 1
ROM Note 2
program
memory
ALU
CY
P00 - P03
BANK
Decode and
control
General register
f X /2 N
Clock output
control
PCL/P22
Clock divider
Clock generator
Sub Main
Standby
control
XT1 XT2 X1 X2
V SS RESET V DD
CPU clock
IC
(V PP ) Note 3
SBS
P80, P81
P10 - P13
P20 - P23
P30 - P33
P40 - P43
P50 - P53
P60 - P63
P70 - P73
P30/MD0 - Note 3
P33/MD3
INT4
KR0 - KR7
INTW
INTT0
TOUT0
TOUT0
RESET
RAM
data memory
512 x 4 bits
SP
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Bit sequential
buffer (16)
2
4
4
4
4
4
4
4
4
( )