参数资料
| 型号： | AT87C58X2-SLSUM |
| 厂商： | Atmel |
| 文件页数： | 29/62页 |
| 文件大小： | 0K |
| 描述： | IC 8051 MCU 32K EPROM 44PLCC |
| 标准包装： | 972 |
| 系列： | 87C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 40/20MHz |
| 连通性： | UART/USART |
| 外围设备： | POR，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 256 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页当前第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页
35
4431E–8051–04/06
AT/TS8xC54/8X2
15. Reduced EMI Mode
The ALE signal is used to demultiplex address and data buses on port 0 when used with exter-
nal program or data memory. Nevertheless, during internal code execution, ALE signal is still
generated. In order to reduce EMI, ALE signal can be disabled by setting AO bit.
The AO bit is located in AUXR register at bit location 0. As soon as AO is set, ALE is no longer
output but remains active during MOVX and MOVC instructions and external fetches. During
ALE disabling, ALE pin is weakly pulled high.
Table 15-1.
AUXR Register
AUXR - Auxiliary Register (8Eh)
Reset Value = XXXX XXX0b
Not bit addressable
7
6
5
4
3
2
1
0
-
RESERVED
AO
Bit
Number
Bit
Mnemonic
Description
7-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
0AO
ALE Output bit
Clear to restore ALE operation during internal fetches.
Set to disable ALE operation during internal fetches.
相关PDF资料 |
PDF描述 |
|---|---|
| AT87C58X2-SLSUL | IC 8051 MCU 32K EPROM 44PLCC |
| EP7309-CB | IC ARM720T MCU 74MHZ 256-PBGA |
| PIC16LF84-04/P | IC MCU FLASH 1KX14 EE 18DIP |
| TSC87251G2D-24IJ | IC 8051 MCU 8BIT OTP 32K 40CDIL |
| 202759-4 | PIN MODULE 14 POS G-SERIES |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT87C58X2-SLSUV | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP |
| AT87F51 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K Bytes QuickFlash |
| AT87F51-12AC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K Bytes QuickFlash |
| AT87F51-12AI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K Bytes QuickFlash |
| AT87F51-12JC | 功能描述:8位微控制器 -MCU 80C31 w/4k RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。