UPD784020 Datasheet, PDF (24/90 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCOMPUTER

mPD784020, 784021
Table 7-1 Special Function Registers (SFRs) (1/4)
Address^Note
0FF00H
0FF01H
0FF02H
0FF03H
0FF06H
0FF07H
0FF0EH
0FF0FH
0FF10H
0FF12H
0FF14H
0FF15H
0FF16H
0FF17H
0FF18H
0FF19H
0FF1AH
0FF1BH
0FF1CH
0FF1DH
0FF20H
0FF21H
0FF23H
0FF26H
0FF27H
0FF2EH
0FF30H
0FF31H
0FF32H
0FF33H
Special function register (SFR) name
Abbreviation R/W
Port 0
P0
R/W
Port 1
P1
Port 2
P2
R
Port 3
P3
R/W
Port 6
P6
Port 7
P7
Port 0 buffer register L P0L
Port 0 buffer register H
P0H
Compare register (timer/counter 0)
CR00
Capture/compare register (timer/counter 0)
CR01
Compare register L (timer/counter 1)
CR10 CR10W
Compare register H (timer/counter 1)
–
Capture/compare register L (timer/counter 1) CR11 CR11W
Capture/compare register H (timer/counter 1)
–
Compare register L (timer/counter 2)
CR20 CR20W
Compare register H (timer/counter 2)
–
Capture/compare register L (timer/counter 2) CR21 CR21W
Capture/compare register H (timer/counter 2)
–
Compare register L (timer 3)
CR30 CR30W
Compare register H (timer 3)
–
Port 0 mode register
PM0
Port 1 mode register
PM1
Port 3 mode register
PM3
Port 6 mode register
PM6
Port 7 mode register
PM7
Real-time output port control register
RTPC
Capture/compare control register 0
CRC0
Timer output control register
TOC
Capture/compare control register 1
CRC1
Capture/compare control register 2
CRC2
Manipulatable bits
When reset
1 bit 8 bits 16 bits
l
l
– Undefined
l
l
–
l
l
–
l
l
–
l
l
– 00H
l
l
– Undefined
l
l
–
l
l
–
–
–
l
–
–
l
–
l
l
–
–
–
l
l
–
–
–
l
l
–
–
–
l
l
–
–
–
l
l
–
–
l
l
– FFH
l
l
–
l
l
–
l
l
–
l
l
–
l
l
– 00H
–
l
– 10H
l
l
– 00H
–
l
–
–
l
– 10H
Note Applicable when the LOCATION 0 instruction is executed. When the LOCATION 0FH instruction is
executed, F0000H is added to each address.
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