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IS80LV52 Datasheet, PDF (10/48 Pages) Integrated Silicon Solution, Inc – CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER
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IS80LV52
IS80LV32
ISSI ®
Table 2: Special Function Register
Symbol
Description
Direct Address
Bit Address, Symbol, or Alternative Port Function
Reset Value
ACC(1)
Accumulator
E0H
B(1)
B register
F0H
DPH Data pointer (DPTR) high 83H
DPL Data pointer (DPTR) low 82H
IE(1)
Interrupt enable
A8H
IP(1)
Interrupt priority
B8H
P0(1)
Port 0
80H
P1(1)
Port 1
90H
P2(1)
Port 2
A0H
P3(1)
Port 3
PCON
Power control
PSW(1)
SBUF
Program status word
Serial data buffer
SCON(1)
SP
Serial controller
Stack pointer
TCON(1)
TMOD
Timer control
Timer mode
T2CON(1,2)
TH0
TH1
TH2(2)
TL0
TL1
RCAP2H(2)
RCAP2L(2)
TL2(2)
Timer/Counter 2
Timer high 0
Timer high 1
Timer high 2
Timer low 0
Timer low 1
Capture high
Capture low
Timer low 2
B0H
87H
D0H
99H
98H
81H
88H
89H
C8H
8CH
8DH
CDH
8AH
8BH
CAH
CBH
CCH
E7 E6
F7 F6
AF AE
EA —
BF BE
——
87 86
P0.7 P0.6
AD7 AD6
97 96
P1.7 P1.6
——
A7 A6
P2.7 P2.6
AD15 AD14
B7 B6
P3.7 P3.6
RD WR
SMOD —
D7 D6
CY AC
9F 9E
SM0 SM1
8F 8E
TF1 TR1
GATE C/T
CF CE
TF2 EXF2
E5 E4 E3 E2 E1 E0
F5 F4 F3 F2 F1 F0
AD AC AB AA A9 A8
ET2 ES ET1 EX1 ET0 EX0
BD BC BB BA B9 B8
PT2 PS PT1 PX1 PT0 PX0
85 84 83 82 81 80
P0.5 P0.4 P0.3 P0.2 P0.1 P0.0
AD5 AD4 AD3 AD2 AD1 AD0
95 94 93 92 91 90
P1.5 P1.4 P1.3 P1.2 P1.1 P1.0
— — — — T2EX T2
A5 A4 A3 A2 A1 A0
P2.5 P2.4 P2.3 P2.2 P2.1 P2.0
AD13 AD12 AD11 AD10 AD9 AD8
B5 B4 B3 B2 B1 B0
P3.5 P3.4 P3.3 P3.2 P3.1 P3.0
T1 T0 INT1 INT0 TXD RXD
— — GF1 GF0 PD IDL
D5 D4 D3 D2 D1 D0
F0 RS1 RS0 OV — P
9D 9C 9B 9A 99 98
SM2 REN TB8 RB8 TI RI
8D 8C 8B 8A 89 88
TF0 TR0 IE1 IT1 IE0 IT0
M1 M0 GATE C/T M1 M0
CD CC CB CA C9 C8
RCLK TCLK EXEN2 TR2 C/T2 CP/RL2
00H
00H
00H
00H
0X000000B
XX000000B
FFH
FFH
FFH
FFH
0XXX0000B
00H
XXXXXXXXB
00H
07H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
Notes:
1. Denotes bit addressable.
2. SFRs are added to the 80C51 SFRs.
10
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION MC019-0A
10/01/98
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