參數(shù)資料
型號(hào): P89V51RB2BA
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, MS-018, SOT-187-2, LCC-44
文件頁(yè)數(shù): 13/77頁(yè)
文件大?。?/td> 350K
代理商: P89V51RB2BA
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Special function registers
…continued
* indicates SFRs that are bit addressable.
Name
Description
SFR
addr.
MSB
P
P
8
9
P
R
1
[1]
Unimplemented bits in SFRs (labeled ’-’) are ‘X’s (unknown) at all times. Unless otherwise specified, ‘1’s 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.
SADDR
SADEN
Serial Port Address Register
Serial Port Address Enable
A9H
B9H
Bit address
87
[1]
SPIE
SPIF
86
[1]
SPEN
SPWCOL
85
[1]
DORD
-
84
[1]
MSTR
-
83
[1]
CPOL
-
82
[1]
CPHA
-
81
[1]
SPR1
-
80
[1]
SPR0
-
SPCTL
SPCFG
SPDAT
SP
SPI Control Register
SPI Configuration Register
SPI Data
Stack Pointer
D5H
AAH
86H
81H
Bit address
8F
TF1
CF
TF2
-
8E
TR1
CE
EXF2
-
8D
TF0
CD
RCLK
ENT2
8C
TR0
CC
TCLK
8B
IE1
CB
8A
IT1
CA
TR2
89
IE0
C9
C/T2
T2OE
88
IT0
C8
TCON*
Timer Control Register
88H
Bit address
T2CON*
T2MOD
TH0
TH1
TH2
TL0
TL1
TL2
TMOD
WDTC
WDTD
Timer2 Control Register
Timer2 Mode Control
Timer 0 HIGH
Timer 1 HIGH
Timer 2 HIGH
Timer 0 LOW
Timer 1 LOW
Timer 2 LOW
Timer 0 and 1 Mode
Watchdog Timer Control
Watchdog Timer Data/Reload
C8H
C9H
8CH
8DH
CDH
8AH
8BH
CCH
89H
C0H
85H
EXEN2
CP/RL2
DCEN
GATE
-
C/T
-
M1
-
M0
GATE
WDRE
C/T
WDTS
M1
WDT
M0
WDOUT
SWDT
Table 4:
Bit functions and addresses
LSB
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