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參數(shù)資料
| 型號： | AT83C51RB2XXX-SLSIL |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Microcontroller |
| 中文描述： | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 4/81頁 |
| 文件大?。?/td> | 1082K |
| 代理商： | AT83C51RB2XXX-SLSIL |
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4
AT80C51RD2/AT83C51Rx2
4113A–8051–09/02
Table 2.
Pin Description
Mnemonic
Pin Number
Type
Name and Function
DIL
PLCC44
VQFP44 1.4
V
SS
20
22
16
I
Ground:
0V reference
V
CC
40
44
38
I
Power Supply:
This is the power supply voltage for normal, idle and power-down
operation
P0.0 - P0.7
39 - 32
43 - 36
37 - 30
I/O
Port 0
: Port 0 is an open-drain, bi-directional I/O port. Port 0 pins that have 1s
written to them float and can be used as high impedance inputs. Port 0 must be
polarized to V
or V
in order to prevent any parasitic current consumption. Port
0 is also the multiplexed low-order address and data bus during access to external
program and data memory. In this application, it uses strong internal pull-up when
emitting 1s. Port 0 also inputs the code bytes during EPROM programming.
External pull-ups are required during program verification during which P0 outputs
the code bytes.
P1.0 - P1.7
1 - 8
2 - 9
40 - 44
1 - 3
I/O
Port 1:
Port 1 is an 8-bit bi-directional I/O port with internal pull-ups. Port 1 pins
that have 1s written to them are pulled high by the internal pull-ups and can be
used as inputs. As inputs, Port 1 pins that are externally pulled low will source
current because of the internal pull-ups. Port 1 also receives the low-order address
byte during memory programming and verification.
Alternate functions for T89C51RB2/RC2 Port 1 include:
1
2
40
I/O
P1.0
: Input/Output
I/O
T2 (P1.0):
Timer/Counter 2 external count input/Clockout
2
3
41
I/O
P1.1:
Input/Output
I
T2EX:
Timer/Counter 2 Reload/Capture/Direction Control
3
4
42
I/O
P1.2:
Input/Output
I
ECI:
External Clock for the PCA
4
5
43
I/O
P1.3:
Input/Output
I/O
CEX0:
Capture/Compare External I/O for PCA module 0
5
6
44
I/O
P1.4:
Input/Output
I/O
CEX1:
Capture/Compare External I/O for PCA module 1
6
7
1
I/O
P1.5:
Input/Output
I/O
CEX2:
Capture/Compare External I/O for PCA module 2
7
8
2
I/O
P1.6:
Input/Output
I/O
CEX3:
Capture/Compare External I/O for PCA module 3
8
9
3
I/O
P1.7:
Input/Output:
I/O
CEX4:
Capture/Compare External I/O for PCA module 4
XTAL1
19
21
15
I
Crystal 1:
Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
XTAL2
18
20
14
O
Crystal 2:
Output from the inverting oscillator amplifier
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PDF描述 |
|---|---|
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| AT83C51RC2XXX-3CSCM | Microcontroller |
| AT83C51RC2XXX-3CSIM | Microcontroller |
| AT83C51RC2XXX-RLTIL | Microcontroller |
| AT83C51RC2XXX-RLTIM | Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AT83C51RB2XXX-SLSIM | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Microcontroller |
| AT83C51RC2 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:80C51 High Performance ROM 8-bit Microcontroller |
| AT83C51RC2-3CSUL | 制造商:IRF 制造商全稱:International Rectifier 功能描述:High Performance 8-bit Microcontroller |
| AT83C51RC2-3CSUM | 制造商:IRF 制造商全稱:International Rectifier 功能描述:High Performance 8-bit Microcontroller |
| AT83C51RC2-RLTUL | 制造商:IRF 制造商全稱:International Rectifier 功能描述:High Performance 8-bit Microcontroller |
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