收藏本站
138
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
Access to these registers is done through the TAP 38-bit DR register comprising a 32-bit data field, a 5-bit address
field and a read/write bit. The data to be written is scanned into the 32-bit data field with the address of the register
to the 5-bit address field and 1 to the read/write bit. A register is read by scanning its address into the address field
and 0 into the read/write bit, going through the UPDATE-DR TAP state, then scanning out the data.
Refer to the ARM7TDMI reference manuel for more information on Comm channel operations.
Figure 20-8. TAP 8-bit DR Register
A read or write takes place when the TAP controller enters UPDATE-DR state. Refer to the IEEE 1149.1 for more
details on JTAG operations.
The address of the Debug Comms Control Register is 0x04.
The address of the Debug Comms Data Register is 0x05.
The Debug Comms Control Register is read-only and allows synchronized handshaking between the processor
and the debugger.
– Bit 1 (W): Denotes whether the programmer can read a data through the Debug Comms Data Register.
If the device is busy W = 0, then the programmer must poll until W = 1.
– Bit 0 (R): Denotes whether the programmer can send data from the Debug Comms Data Register. If R
= 1, data previously placed there through the scan chain has not been collected by the device and so
the programmer must wait.
The write handshake is done by polling the Debug Comms Control Register until the R bit is cleared. Once cleared,
data can be written to the Debug Comms Data Register.
The read handshake is done by polling the Debug Comms Control Register until the W bit is set. Once set, data
can be read in the Debug Comms Data Register.
20.3.4
Device Operations
Several commands on the Flash memory are available. These commands are summarized in Table 20-3 on page
126. Commands are run by the programmer through the serial interface that is reading and writing the Debug
Comms Registers.
TDI
TDO
4
0
r/w
Address
31
Data
0
Address
Decoder
Debug Comms Control Register
Debug Comms Data Register
32
5
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
PIC18F2423-I/SP IC PIC MCU FLASH 8KX16 28-DIP
PIC24HJ64GP204-I/PT IC PIC MCU FLASH 64K 44TQFP
PIC18F8390-I/PT IC PIC MCU FLASH 4KX16 80TQFP
PIC16F84A-20I/P IC MCU FLASH 1KX14 EE 18DIP
DSPIC33FJ64GP204-I/PT IC DSPIC MCU/DSP 64K 44-TQFP
PIC24FJ64GA010-I/PF IC PIC MCU FLASH 64KB 100TQFP
PIC16LF84A-04I/SO IC MCU FLASH 1KX14 EE 18SOIC
DSPIC30F3013-30I/ML IC DSPIC MCU/DSP 24K 44QFN
相关代理商/技术参数
PIC16C63AT-04/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-04/SS 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-04E/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-04E/SS 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-04I/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-04I/SS 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-20/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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
PIC16C63AT-20/SS 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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