参数资料
型号: P89C538NBBB
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: CMOS single-chip 8-bit microcontrollers with FLASH program memory
中文描述: 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44
封装: 10 X 10 X 1.75 MM, PLASTIC, SOT-307-2, QFP-44
文件页数: 6/35页
文件大小: 221K
代理商: P89C538NBBB
Philips Semiconductors
Preliminary specification
89C535/89C536/89C538
CMOS single-chip 8-bit microcontrollers
with FLASH program memory
1997 Jun 05
6
Table 1. Special Function Registers
SYMBOL
DESCRIPTION
DIRECT
ADDRESS
BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCTION
MSB
LSB
RESET
VALUE
ACC*
Accumulator
E0H
E7
E6
E5
E4
E3
E2
E1
E0
00H
B*
B register
F0H
F7
F6
F5
F4
F3
F2
F1
F0
00H
DPTR:
DPH
DPL
Data Pointer (2 bytes)
Data Pointer High
Data Pointer Low
83H
82H
00H
00H
AF
AE
AD
AC
AB
AA
A9
A8
IE*
Interrupt Enable
A8H
EA
ET2
ES
ET1
EX1
ET0
EX0
00H
BF
BE
BD
BC
BB
BA
B9
B8
IP*
Interrupt Priority
B8H
PT2
PS
PT1
PX1
PT0
PX0
x0000000B
87
86
85
84
83
82
81
80
P0*
Port 0
80H
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
FFH
97
96
95
94
93
92
91
90
P1*
Port 1
90H
T2EX
T2
FFH
A7
A6
A5
A4
A3
A2
A1
A0
P2*
Port 2
A0H
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
FFH
B7
B6
B5
B4
B3
B2
B1
B0
P3*
Port 3
B0H
RD
WR
T1
T0
INT1
INT0
TxD
RxD
FFH
PCON#
Power Control
87H
SMOD
GF1
GF0
PD
IDL
0xxxx000B
D7
D6
D5
D4
D3
D2
D1
D0
PSW*
Program Status Word
D0H
CY
AC
F0
RS1
RS0
OV
P
00H
RACAP2H
#
RACAP2L
#
Timer 2 Capture High
Timer 2 Capture Low
CBH
CAH
00H
00H
SBUF
Serial Data Buffer
99H
xxxxxxxxB
9F
9E
9D
9C
9B
9A
99
98
SCON*
Serial Control
98H
SM0
SM1
SM2
REN
TB8
RB8
TI
RI
00H
SP
Stack Pointer
81H
07H
8F
8E
8D
8C
8B
8A
89
88
TCON*
Timer Control
88H
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00H
CF
CE
CD
CC
CB
CA
C9
C8
T2CON*
TH0
TH1
TH2#
TL0
TL1
TL2#
Timer 2 Control
Timer High 0
Timer High 1
Timer High 2
Timer Low 0
Timer Low 1
Timer Low 2
C8H
8CH
8DH
CDH
8AH
8BH
CCH
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2
CP/RL2
00H
00H
00H
00H
00H
00H
00H
TMOD
SFRs are bit addressable.
SFRs are modified from or added to the 80C51 SFRs.
Reserved bits.
Timer Mode
89H
GATE
C/T
M1
M0
GATE
C/T
M1
M0
00H
*
#
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