參數(shù)資料
型號(hào)： T89C51CC01UA-RLTIM
廠商： Atmel
文件頁數(shù)： 86/123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
25
A/T89C51CC01
4129N–CAN–03/08
External Space
Memory Interface
The external memory interface comprises the external bus (port 0 and port 2) as well as
the bus control signals (RD, WR, and ALE).
Figure 13 shows the structure of the external address bus. P0 carries address A7:0
while P2 carries address A15:8. Data D7:0 is multiplexed with A7:0 on P0. Table 17
describes the external memory interface signals.
Figure 13. External Data Memory Interface Structure
Table 17. External Data Memory Interface Signals
External Bus Cycles
This section describes the bus cycles the T89C51CC01 executes to read (see
Figure 14), and write data (see Figure 15) in the external data memory.
External memory cycle takes 6 CPU clock periods. This is equivalent to 12 oscillator
clock period in standard mode or 6 oscillator clock periods in X2 mode. For further infor-
mation on X2 mode.
Slow peripherals can be accessed by stretching the read and write cycles. This is done
using the M0 bit in AUXR register. Setting this bit changes the width of the RD and WR
signals from 3 to 15 CPU clock periods.
For simplicity, the accompanying figures depict the bus cycle waveforms in idealized
form and do not provide precise timing information. For bus cycle timing parameters
refer to the Section “AC Characteristics”.
Signal
Name
Type
Description
Alternative
Function
A15:8
O
Address Lines
Upper address lines for the external bus.
P2.7:0
AD7:0
I/O
Address/Data Lines
Multiplexed lower address lines and data for the external
memory.
P0.7:0
ALE
O
Address Latch Enable
ALE signals indicates that valid address information are available
on lines AD7:0.
-
RD
O
Read
Read signal output to external data memory.
P3.7
WR
O
Write
Write signal output to external memory.
P3.6
RAM
PERIPHERAL
T89C51CC01
P2
P0
AD7:0
A15:8
A7:0
A15:8
D7:0
A7:0
ALE
WR
OE
RD
WR
Latch
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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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T89C51CC02_0305 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Enhanced 8-bit Microcontroller with CAN Controller and Flash Memory
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