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參數(shù)資料
型號: UPD78F9211CS-CAB-A
廠商: Renesas Electronics America
文件頁數(shù): 142/175頁
文件大?。?/td> 0K
描述: MCU 8BIT 2KB FLASH 16PIN
標準包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
外圍設備: LVD,POR,PWM,WDT
輸入/輸出數(shù): 13
程序存儲器容量: 2KB(2K x 8)
程序存儲器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-DIP(0.300",7.62mm)
包裝: 托盤
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16994EJ6V0UD
67
Figure 4-7. Block Diagram of P40 to P47
P40 to P47
WRPU
RD
WRPORT
WRPM
PU40 to PU47
PM40 to PM47
VDD
P-ch
PU4
PM4
Internal
bus
Output latch
(
P40 to P47)
Selector
P4
P4:
Port register 4
PU4:
Pull-up resistor option register 4
PM4:
Port mode register 4
RD:
Read signal
WR
××: Write signal
4.3
Registers Controlling Port Functions
The ports are controlled by the following four types of registers.
Port mode registers (PM2 to PM4)
Port registers (P2 to P4)
Port mode control register 2 (PMC2) (μPD78F921x only)
Pull-up resistor option registers (PU2 to PU4)
<R>
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