参数资料
型号: P89LPC9251FDH
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: 8-bit microcontroller with accelerated two-clock 80C51 core 2 kB-4 kB-8 kB 3 V byte-erasable flash with 8-bit ADC
中文描述: MICROCONTROLLER, PDSO20
封装: 4.40 MM, PLASTIC, MO-153, SOT360-1, TSSOP-20
文件页数: 9/75页
文件大小: 1612K
代理商: P89LPC9251FDH
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P89LPC9201/921
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[1]
All ports are in input only (high-impedance) state after power-up.
[2]
BRGR1 and BRGR0 must only be written if BRGEN in BRGCON SFR is logic 0. If any are written while BRGEN = 1, the result is unpredictable.
[3]
The RSTSRC register reflects the cause of the P89LPC9201/9211/922A1 reset except BOIF bit. Upon a power-up reset, all reset source flags are cleared except POF and BOF;
the power-on reset value is x011 0000.
[4]
After reset, the value is 1110 01x1, i.e., PRE2 to PRE0 are all logic 1, WDRUN = 1 and WDCLK = 1. WDTOF bit is logic 1 after watchdog reset and is logic 0 after power-on reset.
Other resets will not affect WDTOF.
[5]
On power-on reset and watchdog reset, the TRIM SFR is initialized with a factory preprogrammed value. Other resets will not cause initialization of the TRIM register.
[6]
The only reset sources that affect these SFRs are power-on reset and watchdog reset.
Bit address
8F
8E
8D
8C
8B
8A
89
88
TCON*
Timer 0 and 1
control
88H
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00
0000 0000
TH0
Timer 0 high
8CH
00
0000 0000
TH1
Timer 1 high
8DH
00
0000 0000
TL0
Timer 0 low
8AH
00
0000 0000
TL1
Timer 1 low
8BH
00
0000 0000
TMOD
Timer 0 and 1
mode
89H
T1GATE
T1C/T
T1M1
T1M0
T0GATE
T0C/T
T0M1
T0M0
00
0000 0000
TRIM
Internal
oscillator trim
register
96H
RCCLK
ENCLK
TRIM.5
TRIM.4
TRIM.3
TRIM.2
TRIM.1
TRIM.0
WDCON
Watchdog
control register
A7H
PRE2
PRE1
PRE0
-
WDRUN
WDTOF
WDCLK
WDL
Watchdog load
C1H
FF
1111 1111
WFEED1
Watchdog
feed 1
C2H
WFEED2
Watchdog
feed 2
C3H
Table 4.
Special function registers - P89LPC9201/9211/922A1
* indicates SFRs that are bit addressable.
Name
Description
SFR
addr.
Bit functions and addresses
Reset value
MSB
LSB
Hex
Binary
相关PDF资料
PDF描述
P89LPC924FDH 8-bit microcontrollers with accelerated two-clock 80C51 core 4 kB-8 kB 3 V low-power Flash with 8-bit A-D converter
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