参数资料
型号: UPD78F9202MA-CAC-A
厂商: Renesas Electronics America
文件页数: 122/158页
文件大小: 0K
描述: MCU 8BIT 4KB FLASH 128B RAM
标准包装: 400
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: 7
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: 10-LSSOP(0.225",5.72mm 宽)
包装: 托盘
CHAPTER 4 PORT FUNCTIONS
User’s Manual U18172EJ3V0UD
64
4.2.2
Port 3
The P32 pin is a 1-bit I/O port with an output latch. This pin can be set to the input or output mode by using port
mode register 3 (PM3). When this pin is used as an input port, an on-chip pull-up resistor can be connected in 1-bit
units by using pull-up resistor option register 3 (PU3). This pin can also be used for external interrupt request input.
The P32 pin is a Reset signal generation sets port 3 to the input mode.
The P34 pin is a 1-bit input-only port. This pin is also used as a RESET pin, and when the power is turned on, this
is the reset function. For the setting method for pin functions, see CHAPTER 15 OPTION BYTE.
When P34 in
μPD78F920x is used as an input port pin, connect the pull-up resistor.
When P34 in
μPD78F950x is used as an input port pin, an on-chip pull-up resistor can be connected in 1-bit units
by using pull-up resistor option register 3 (PU3).
Figures 4-8 and 4-10 show the block diagrams of port 3.
Figure 4-8. Block Diagram of P32
P32/INTP1
WRPU
RD
WRPORT
WRPM
PU32
PM32
VDD
P-ch
PU3
PM3
Alternate
function
Selector
Output latch
(P32)
Internal
bus
P3
P3:
Port register 3
PU3:
Pull-up resistor option register 3
PM3:
Port mode register 3
RD:
Read signal
WR
××: Write signal
<R>
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