參數(shù)資料
型號(hào): UPD78F9512GR-JJG-A
廠商: Renesas Electronics America
文件頁數(shù): 140/175頁
文件大?。?/td> 0K
描述: MCU 8BIT SGL CHIP 16PIN
標(biāo)準(zhǔn)包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
外圍設(shè)備: LVD,POR,PWM,WDT
輸入/輸出數(shù): 13
程序存儲(chǔ)器容量: 4KB(4K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-SSOP(0.173",4.40mm 寬)
包裝: 托盤
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16994EJ6V0UD
65
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 is used as an input port pin, connect the pull-up resistor.
Figures 4-5 and 4-6 show the block diagrams of port 3.
Figure 4-5. 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
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