参数资料
型号: UPD78F9212GR-JJG-A
厂商: Renesas Electronics America
文件页数: 148/175页
文件大小: 0K
描述: MCU 8BIT 4KB FLASH MEM 16-SSOP
标准包装: 1
系列: 78K0S/Kx1+
核心处理器: 78K0S
芯体尺寸: 8-位
速度: 10MHz
外围设备: LVD,POR,PWM,WDT
输入/输出数: 13
程序存储器容量: 4KB(4K x 8)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 16-SSOP(0.173",4.40mm 宽)
包装: 托盘
其它名称: 972-1046
UPD78F9212GR-JJG-A-ND
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16994EJ6V0UD
72
4.4
Operation of Port Function
The operation of a port differs, as follows, depending on the setting of the I/O mode.
Caution
Although a 1-bit memory manipulation instruction manipulates 1 bit, it accesses a port in 8-bit
units. Therefore, the contents of the output latch of a pin in the input mode, even if it is not
subject to manipulation by the instruction, are undefined in a port with a mixture of inputs and
outputs.
4.4.1
Writing to I/O port
(1) In output mode
A value can be written to the output latch by a transfer instruction. In addition, the contents of the output latch are
output from the pin. Once data is written to the output latch, it is retained until new data is written to the output
latch.
When a reset signal is generated, cleans the data in the output latch.
(2) In input mode
A value can be written to the output latch by a transfer instruction. Because the output buffer is off, however, the
pin status remains unchanged.
Once data is written to the output latch, it is retained until new data is written to the output latch.
When a reset signal is generated, cleans the data in the output latch.
4.4.2
Reading from I/O port
(1) In output mode
The contents of the output latch can be read by a transfer instruction. The contents of the output latch remain
unchanged.
(2) In input mode
The pin status can be read by a transfer instruction. The contents of the output latch remain unchanged.
4.4.3
Operations on I/O port
(1) In output mode
An operation is performed on the contents of the output latch and the result is written to the output latch. The
contents of the output latch are output from the pin.
Once data is written to the output latch, it is retained until new data is written to the output latch.
Reset signal generation clears the data in the output latch.
(2) In input mode
The pin level is read and an operation is performed on its contents. The operation result is written to the output
latch. However, the pin status remains unchanged because the output buffer is off.
When a reset signal is generated, cleans the data in the output latch.
相关PDF资料
PDF描述
MS3116F22-21SZ CONN PLUG 21POS STRAIGHT W/SCKT
C8051F717-GM IC 8051 MCU 16K FLASH 24WQFN
VE-JT4-IW-F2 CONVERTER MOD DC/DC 48V 100W
V300C36H150BL3 CONVERTER MOD DC/DC 36V 150W
D38999/26JA98SN CONN PLUG 3POS STRAIGHT W/SCKT
相关代理商/技术参数
参数描述
UPD78F9212MA-FAA-AX 制造商:Renesas Electronics Corporation 功能描述:78K0S/KY1+ MCU, 4KB FLASH, 0.125KB RAM, 16-SSOP - Trays 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 4KB FLASH 16SSOP 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 10MHZ 4KB 16SSOP 制造商:Renesas Electronics Corporation 功能描述:78K0S Series 8-bit 128 Byte RAM 4 kB Flash 10 MHz Microcontroller - SSOP-16 制造商:Renesas Electronics Corporation 功能描述:MCU8Bit 1.1MIPS ROM4KRAM128B SSOP16Pin
UPD78F9221CS-CAC-A 功能描述:MCU 8BIT 2KB FLASH 20PIN RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:78K0S/Kx1+ 标准包装:300 系列:78K0R/Ix3 核心处理器:78K/0R 芯体尺寸:16-位 速度:40MHz 连通性:3 线 SIO,I²C,LIN,UART/USART 外围设备:DMA,LVD,POR,PWM,WDT 输入/输出数:27 程序存储器容量:16KB(16K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:38-SSOP 包装:托盘
UPD78F9221MC(T)-5A4 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9221MC(T)-5A4-A 制造商:NEC Electronics Corporation 功能描述:8BIT MCU 2K FLASH 128B RAM 78F9221
UPD78F9221MC-5A4-A 功能描述:MCU 8BIT 2KB FLASH 20PIN RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:78K0S/Kx1+ 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA,UART/USART 外围设备:欠压检测/复位,LED,POR,PWM,WDT 输入/输出数:16 程序存储器容量:4KB(4K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND