参数资料
型号: PSD835G2V-C-12M
厂商: 意法半导体
英文描述: Configurable Memory System on a Chip for 8-Bit Microcontrollers
中文描述: 在8片位微控制器可配置存储系统
文件页数: 66/110页
文件大小: 570K
代理商: PSD835G2V-C-12M
PSD8XX Family
PSD835G2
58
The
PSD835G2
Functional
Blocks
(cont.)
9.4.3.1 Control Register
Any bit set to ‘0’ in the Control Register sets the corresponding Port pin to MCU I/O Mode,
and a ‘1’ sets it to Address Out Mode. The default mode is MCU I/O. Only Ports E, F and
G have an associated Control Register.
9.4.3.2 Direction Register
The Direction Register controls the direction of data flow in the I/O Ports. Any bit set to ‘1’
in the Direction Register will cause the corresponding pin to be an output, and any bit set
to ‘0’ will cause it to be an input. The default mode for all port pins is input.
Figures 26 and 28 show the Port Architecture diagrams for Ports A/B/C and E/F/G
respectively. The direction of data flow for Ports A, B, C and F are controlled not only by
the direction register, but also by the output enable product term from the PLD AND array.
If the output enable product term is not active, the Direction Register has sole control of a
given pin’s direction.
An example of a configuration for a port with the three least significant bits set to output
and the remainder set to input is shown in Table 22. Since Port D only contains four pins,
the Direction Register for Port D has only the four least significant bits active.
Direction Register Bit
Port Pin Mode
0
Input
1
Output
Table 20. Port Pin Direction Control,
Output Enable P.T. Not Defined
Direction Register Bit
Output Enable P.T.
Port Pin Mode
0
Input
0
1
Output
1
0
Output
1
Output
Table 21. Port Pin Direction Control, Output Enable P.T. Defined
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
000
0
1
Table 22. Port Direction Assignment Example
相关PDF资料
PDF描述
PSD835G2V-C-12JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
PSD835G2V-C-12J Configurable Memory System on a Chip for 8-Bit Microcontrollers
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参数描述
PSD853F2-70J 功能描述:SPLD - 简单可编程逻辑器件 5.0V 1M 70ns RoHS:否 制造商:Texas Instruments 逻辑系列:TICPAL22V10Z 大电池数量:10 最大工作频率:66 MHz 延迟时间:25 ns 工作电源电压:4.75 V to 5.25 V 电源电流:100 uA 最大工作温度:+ 75 C 最小工作温度:0 C 安装风格:Through Hole 封装 / 箱体:DIP-24
PSD853F2-70M 功能描述:CPLD - 复杂可编程逻辑器件 5.0V 1M 70ns RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100
PSD853F2-90J 功能描述:CPLD - 复杂可编程逻辑器件 5.0V 1M 90ns RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100
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