参数资料
型号: AT89C51CC01UA-RLRUM
厂商: Atmel
文件页数: 96/123页
文件大小: 0K
描述: IC 8051 MCU 32K FLASH 44-VQFP
产品培训模块: MCU Product Line Introduction
标准包装: 1,500
系列: AT89C CAN
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: CAN,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LQFP
包装: 标准包装
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
其它名称: AT89C51CC01UA-RLRUMDKR
34
A/T89C51CC01
4129N–CAN–03/08
17.22 External Code Memory Access
Memory Interface
The external memory interface comprises the external bus (port 0 and port 2) as well as
the bus control signals (PSEN#, and ALE).
Figure 18 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 18
describes the external memory interface signals.
Figure 18. External Code Memory Interface Structure
External Bus Cycles
This section describes the bus cycles the T89C51CC01 executes to fetch code (see
Figure 19) in the external program/code 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 see section “Clock “.
For simplicity, the accompanying figure depicts the bus cycle waveforms in idealized
form and do not provide precise timing information.
For bus cycling parameters refer to the ‘AC-DC parameters’ section.
Table 23. External Code Memory Interface Signals
Signal
Name
Type
Description
Alternate
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.
-
PSEN#
O
Program Store Enable Output
This signal is active low during external code fetch or external code read
(MOVC instruction).
-
Flash
EPROM
T89C51CC01
P2
P0
AD7:0
A15:8
A7:0
A15:8
D7:0
A7:0
ALE
Latch
OE
PSEN#
相关PDF资料
PDF描述
VE-B5R-IW-F4 CONVERTER MOD DC/DC 7.5V 100W
VE-B5R-IW-F3 CONVERTER MOD DC/DC 7.5V 100W
VE-B5R-IW-F2 CONVERTER MOD DC/DC 7.5V 100W
VE-B5P-IX-F3 CONVERTER MOD DC/DC 13.8V 75W
VE-B5P-IX-F1 CONVERTER MOD DC/DC 13.8V 75W
相关代理商/技术参数
参数描述
AT89C51CC01UA-RLTUM 功能描述:8位微控制器 -MCU CAN Bootloader UART 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
AT89C51CC01UA-SLSUM 功能描述:8位微控制器 -MCU CAN-STICK Bootloader UART IND 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
AT89C51CC01UU-RLTUM 功能描述:8位微控制器 -MCU Microcontroller 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
AT89C51CC01UU-SLSUM 功能描述:8位微控制器 -MCU Microcontroller 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
AT89C51CC02 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Enhanced 8-bit Microcontroller with CAN Controller and Flash