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參數(shù)資料
| 型號： | T89C51RD2-3CSCM |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 6/104頁 |
| 文件大?。?/td> | 798K |
| 代理商： | T89C51RD2-3CSCM |
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6
T89C51RD2
4243G
–
8051
–
05/03
Table 2.
Pin Description
Mnemonic
Pin Number
Type
Name and Function
DIL
LCC
VQFP 1.4
V
SS
20
22
16
I
Ground:
0V reference
Vss1
1
39
I
Optional Ground:
Contact the Sales Office for ground connection.
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, bidirectional 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
CC
or V
SS
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 bidirectional 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 TSC8x54/58 Port 1 include:
1
2
40
I/O
T2 (P1.0):
Timer/Counter 2 external count input/Clockout
2
3
41
I
T2EX (P1.1):
Timer/Counter 2 Reload/Capture/Direction Control
3
4
42
I
ECI (P1.2):
External Clock for the PCA
4
5
43
I/O
CEX0 (P1.3):
Capture/Compare External I/O for PCA module 0
5
6
44
I/O
CEX1 (P1.4):
Capture/Compare External I/O for PCA module 1
6
7
1
I/O
CEX2 (P1.5):
Capture/Compare External I/O for PCA module 2
7
8
2
I/O
CEX3 (P1.6):
Capture/Compare External I/O for PCA module 3
8
9
3
I/O
CEX4 (P1.7):
Capture/Compare External I/O for PCA module 4
P2.0-P2.7
21-28
24-31
18-25
I/O
Port 2
: Port 2 is an 8-bit bidirectional I/O port with internal pull-ups. Port 2 pins that
have 1s written to them are pulled high by the internal pull-ups and can be used as
inputs. As inputs, Port 2 pins that are externally pulled low will source current because
of the internal pull-ups. Port 2 emits the high-order address byte during fetches from
external program memory and during accesses to external data memory that use 16-
bit addresses (MOVX @DPTR).In this application, it uses strong internal pull-ups
emitting 1s. During accesses to external data memory that use 8-bit addresses (MOVX
@Ri), port 2 emits the contents of the P2 SFR. Some Port 2 pins receive the high order
address bits during EPROM programming and verification:
P2.0 to P2.5 for RB devices
P2.0 to P2.6 for RC devices
P2.0 to P2.7 for RD devices.
P3.0-P3.7
10-17
11,
13-19
5,
7-13
I/O
Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins that
have 1s written to them are pulled high by the internal pull-ups and can be used as
inputs. As inputs, Port 3 pins that are externally pulled low will source current because
of the internal pull-ups. Port 3 also serves the special features of the 80C51 family, as
listed below.
10
11
5
I
RXD (P3.0):
Serial input port
11
13
7
O
TXD (P3.1):
Serial output port
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T89C51RD2-3CSIL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSIM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-DDVCM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RDTCL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RDTCM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T89C51RD2-3CSC-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSIL | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSI-L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSIM | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSI-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
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