收藏本站
参数资料
型号： ST72SCR1x4T1
厂商： 意法半导体
英文描述： 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
中文描述： 8位低功耗，全速USB微控制器与16K的闪存，768内存，智能卡的I /楼，计时器
文件页数： 64/102页
文件大小： 1413K
代理商： ST72SCR1X4T1
ST7SCR
64/102
SMARTCARD INTERFACE
(Cont’d)
SMARTCARD CONTACT CONTROL REGISTER
(CRDCCR)
Read/Write
Reset Value: 00xx xx00 (xxh)
Note:
To modify the content of this register, the LD
instruction must be used (do not use the BSET
and BRES instructions).
Bit 7 =
CLKSEL
Card clock selection.
This bit is set and cleared by software.
0: The signal on the CRDCLK pin is a copy of the
CRDCLK bit.
1: The signal on the CRDCLK pin is a 4MHz fre-
quency clock.
Note: T
o start the clock at a known level, the CRD-
CLK bit should be changed before the CLKSEL
bit.
Bit 6 = Reserved, must be kept cleared.
Bit 5 =
CRDC8
CRDC8 pin control.
Reading this bit returns the value present on the
CRDC8 pin. Writing this bit outputs the bit value on
the pin.
Bit 4 =
CRDC4
CRDC4 pin control
Reading this bit returns the value present on the
CRDC4 pin. Writing this bit outputs the bit value on
the pin.
Bit 3 =
CRDIO
CRDIO pin control
.
This bit is active only if the UART bit in the CRDCR
Register is reset. Reading this bit returns the value
present on the CRDIO pin.
If the UART bit
is reset:
– Writing “0” forces a low level on the CRDIO pin
– Writing “1” forces the CRDIO pin to open drain
Hi-Z.
Bit 2 =
CRDCLK
CRDCLK pin control
This bit is active only if the CLKSEL bit of the CRD-
CCR register is reset. Reading this bit returns the
value present in the register (not the CRDCLK pin
value).
When the CLKSEL bit is reset:
0: Level 0 to be applied on CRDCLK pin.
1: Level 1 to be applied on CRDCLK pin.
Note:
To ensure that the clock stops at a given
value, write the desired value in the CRDCLK bit
prior to changing the CLKSEL bit from 1 to 0.
Bit 1 =
CRDRST
CRDRST pin control.
Reading this bit returns the value present on the
CRDRST pin. Writing this bit outputs the bit value
on the pin.
Bit 0 =
CRDVCC
CRDVCC Pin Control.
This bit is set and cleared by software and forced
to 0 by hardware when no card is present
(CRDIRF bit=0).
0: No voltage to be applied on the CRDVCC pin.
1: The selected voltage must be applied on the
CRDVCC pin.
Figure 37. Smartcard I/O Pin Structure
7
0
CLK
SEL
-
CRD
C8
CRD
C4
CRD
IO
CRD
CLK
CRD
RST
CRD
VCC
I/O PIN
DATA BUS
CRDCCR
REGISTER
相关PDF资料
PDF描述
ST72FSCR1x4T1 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
ST72PSCR1x4T1 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
ST8024 Smartcard interface
ST8024_06 Smartcard interface
ST8024CDR Smartcard interface
相关代理商/技术参数
参数描述
ST72T101G1B6 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI 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
ST72T101G1M6 功能描述:8位微控制器 -MCU OTP EPROM 4K SPI 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
ST72T101G2B6 功能描述:8位微控制器 -MCU OTP EPROM 8K SPI 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
ST72T101G2M6 功能描述:8位微控制器 -MCU RO 511-ST72C104G2M6 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
ST72T121J2B6 功能描述:8位微控制器 -MCU OTP EPROM 8K SPI/SCI 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。

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

*
*
*