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參數(shù)資料
型號(hào): P89LPC920
廠商: NXP Semiconductors N.V.
英文描述: 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
中文描述: 8位微控制器兩個(gè)小時(shí)80C51的核心2鍵盤/ 4 KB的/ 8 KB的3伏的低功耗Flash 256 - RAM的字節(jié)數(shù)據(jù)
文件頁數(shù): 10/45頁
文件大小: 877K
代理商: P89LPC920
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Special function registers
* indicates SFRs that are bit addressable.
Name
Description
SFR
addr.
MSB
Bit address
E7
E6
E5
ACC*
Accumulator
E0H
AUXR1
Auxiliary function register
A2H
CLKLP
EBRR
ENT1
Bit address
F7
F6
F5
B*
B register
F0H
BRGR0
[2]
Baud rate generator rate
LOW
BRGR1
[2]
Baud rate generator rate
HIGH
BRGCON
Baud rate generator control
BDH
-
-
-
CMP1
Comparator 1 control register
ACH
-
-
CE1
CMP2
Comparator 2 control register
ADH
-
-
CE2
DIVM
CPU clock divide-by-M
control
DPTR
Data pointer (2 bytes)
DPH
Data pointer HIGH
83H
DPL
Data pointer LOW
82H
FMADRH
Program Flash address HIGH
E7H
FMADRL
Program Flash address LOW
E6H
FMCON
Program Flash control (Read)
E4H
BUSY
-
-
Program Flash control (Write)
E4H
FMCMD.
7
6
5
FMDATA
Program Flash data
E5H
I2ADR
I
2
C slave address register
DBH
I2ADR.6
I2ADR.5
I2ADR.4
Bit address
DF
DE
DD
I2CON*
I
2
C control register
D8H
-
I2EN
STA
I2DAT
I
2
C data register
DAH
I2SCLH
Serial clock generator/SCL
duty cycle register HIGH
P
P
8
9
P
R
1
Table 4:
Bit functions and addresses
Reset value
Hex
LSB
E0
Binary
E4
E3
E2
E1
00
00
[1]
00000000
000000x0
ENT0
F4
SRST
F3
0
-
DPS
F0
F2
F1
00
00
00000000
00000000
BEH
BFH
00
00000000
-
-
-
SBRGS
CO1
CO2
BRGEN
CMF1
CMF2
00
00
[1]
00
[1]
00
xxxxxx00
xx000000
xx000000
00000000
CP1
CP2
CN1
CN2
OE1
OE2
95H
00
00
00
00
70
00000000
00000000
00000000
00000000
01110000
-
HVA
FMCMD.
3
HVE
FMCMD.
2
SV
OI
FMCMD.
FMCMD.
FMCMD.
4
FMCMD.
1
FMCMD.
0
00
00
00000000
00000000
I2ADR.3
DC
STO
I2ADR.2
DB
SI
I2ADR.1
DA
AA
I2ADR.0
D9
-
GC
D8
CRSEL
00
x00000x0
DDH
00
00000000
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