參數(shù)資料
型號(hào)： P89LPC903
廠(chǎng)商： NXP Semiconductors N.V.
英文描述： 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
中文描述： 8位微控制器兩個(gè)小時(shí)80C51的核心具有1KB 3伏閃光的128字節(jié)RAM
文件頁(yè)數(shù)： 20/55頁(yè)
文件大?。?/td> 1236K
代理商： P89LPC903
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P89LPC902 Special function registers
…continued
* indicates SFRs that are bit addressable.
Name
Description
SFR
addr.
MSB
P
P
8
9
P
R
2
[1]
[2]
All ports are in input only (high impedance) state after power-up.
BRGR1 and BRGR0 must only be written if BRGEN in BRGCON SFR is ‘0’. If any are written while BRGEN = 1, the result is unpredictable.
Unimplemented bits in SFRs (labeled ’-’) are X (unknown) at all times. Unless otherwise specified, ones should not be written to these bits since they may be used for other
purposes in future derivatives. The reset values shown for these bits are ‘0’s although they are unknown when read.
The RSTSRC register reflects the cause of the P89LPC901/902/903 reset. Upon a power-up reset, all reset source flags are cleared except POF and BOF; the power-on reset
value is xx110000.
After reset, the value is 111001x1, i.e., PRE2-PRE0 are all ‘1’, WDRUN = 1 and WDCLK = 1. WDTOF bit is ‘1’ after Watchdog reset and is ‘0’ after power-on reset. Other resets will
not affect WDTOF.
On power-on reset, the TRIM SFR is initialized with a factory preprogrammed value. Other resets will not cause initialization of the TRIM register.
The only reset source that affects these SFRs is power-on reset.
[3]
[4]
[5]
[6]
Bit address
8F
TF1
8E
TR1
8D
TF0
8C
TR0
8B
-
8A
-
89
-
88
-
TCON*
TH0
TH1
TL0
TL1
TMOD
TRIM
WDCON
WDL
WFEED1
WFEED2
Timer 0 and 1 control
Timer 0 HIGH
Timer 1 HIGH
Timer 0 LOW
Timer 1 LOW
Timer 0 and 1 mode
Internal oscillator trim register
Watchdog control register
Watchdog load
Watchdog feed 1
Watchdog feed 2
88H
8CH
8DH
8AH
8BH
89H
96H
A7H
C1H
C2H
C3H
00
00
00
00
00
00
00000000
00000000
00000000
00000000
00000000
00000000
-
-
-
-
T1M1
TRIM.5
PRE0
T1M0
TRIM.4
-
-
-
T0M1
TRIM.1
WDTOF
T0M0
TRIM.0
WDCLK
TRIM.3
-
TRIM.2
WDRUN
[5] [6]
PRE2
PRE1
[4] [6]
FF
11111111
Table 8:
Bit functions and addresses
Reset value
Hex
LSB
Binary
相關(guān)PDF資料
PDF描述
P89LPC903FD 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89LPC903FD 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
P89LPC903FD,112 功能描述:8位微控制器 -MCU 80C51 1K FL 128B RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
P89LPC903FD112 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 12MHZ SOIC-8
P89LPC904 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter
P89LPC904FD 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter
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