參數(shù)資料
型號(hào)： T89C51CC01UA-RLTIM
廠商： Atmel
文件頁數(shù)： 102/123頁
文件大?。?/td> 0K
描述： IC 8051 MCU FLASH 32K 44VQFP
標(biāo)準(zhǔn)包裝： 160
系列： AT89C CAN
核心處理器： 8051
芯體尺寸： 8-位
速度： 40MHz
連通性： CAN，UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲(chǔ)器容量： 32KB（32K x 8）
程序存儲(chǔ)器類型： 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量： 1.25K x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-LQFP
包裝： 托盤
配用： AT89STK-06-ND - KIT DEMOBOARD 8051 MCU W/CAN
其它名稱： T89C51CC01UARLTIM
4
A/T89C51CC01
4129N–CAN–03/08
I/O Configurations
Each Port SFR operates via type-D latches, as illustrated in Figure 1 for Ports 3 and 4. A
CPU "write to latch" signal initiates transfer of internal bus data into the type-D latch. A
CPU "read latch" signal transfers the latched Q output onto the internal bus. Similarly, a
"read pin" signal transfers the logical level of the Port pin. Some Port data instructions
activate the "read latch" signal while others activate the "read pin" signal. Latch instruc-
tions are referred to as Read-Modify-Write instructions. Each I/O line may be
independently programmed as input or output.
Port 1, Port 3 and Port 4
Figure 1 shows the structure of Ports 1 and 3, which have internal pull-ups. An external
source can pull the pin low. Each Port pin can be configured either for general-purpose
I/O or for its alternate input output function.
To use a pin for general-purpose output, set or clear the corresponding bit in the Px reg-
ister (x = 1,3 or 4). To use a pin for general-purpose input, set the bit in the Px register.
This turns off the output FET drive.
To configure a pin for its alternate function, set the bit in the Px register. When the latch
is set, the "alternate output function" signal controls the output level (see Figure 1). The
operation of Ports 1, 3 and 4 is discussed further in the "quasi-Bidirectional Port Opera-
tion" section.
Figure 1. Port 1, Port 3 and Port 4 Structure
Note:
The internal pull-up can be disabled on P1 when analog function is selected.
Port 0 and Port 2
Ports 0 and 2 are used for general-purpose I/O or as the external address/data bus. Port
0, shown in Figure 3, differs from the other Ports in not having internal pull-ups. Figure 3
shows the structure of Port 2. An external source can pull a Port 2 pin low.
To use a pin for general-purpose output, set or clear the corresponding bit in the Px reg-
ister (x = 0 or 2). To use a pin for general-purpose input, set the bit in the Px register to
turn off the output driver FET.
D
CL
Q
P1.X
LATCH
INTERNAL
WRITE
TO
LATCH
READ
PIN
READ
LATCH
P1.x
P3.X
P4.X
ALTERNATE
OUTPUT
FUNCTION
VCC
INTERNAL
PULL-UP (1)
ALTERNATE
INPUT
FUNCTION
P3.x
P4.x
BUS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T89C51CC01UA-SLSIM 功能描述:IC 8051 MCU FLASH 32K 44PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT89C CAN 標(biāo)準(zhǔn)包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設(shè)備:POR，WDT 輸入/輸出數(shù):32 程序存儲(chǔ)器容量:32KB（32K x 8） 程序存儲(chǔ)器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件
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