參數(shù)資料
型號: UPD78F9222CS-CAC-A
廠商: Renesas Electronics America
文件頁數(shù): 95/125頁
文件大小: 0K
描述: MCU 8BIT 4KB FLASH 20PIN
標準包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
連通性: LIN,UART/USART
外圍設備: LVD,POR,PWM,WDT
輸入/輸出數(shù): 15
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 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: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 托盤
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16898EJ6V0UD
69
(4) Pull-up resistor option registers (PU2, PU3, PU4, PU12)
These registers are used to specify whether an on-chip pull-up resistor is connected to P20 to P23, P30, P31,
P40 to P45, and P123. By setting PU2, PU3, PU4, or PU12, an on-chip pull-up resistor can be connected to
the port pin corresponding to the bit of PU2, PU3, PU4, or PU12.
PU2, PU3, PU4, and PU12 are set by using a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation set these registers to 00H.
Figure 4-16. Format of Pull-up Resistor Option Register
Address: FF32H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
PU2
0
PU23
PU22
PU21
PU20
Address: FF33H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
PU3
0
PU31
PU30
Address: FF34H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
PU4
0
PU45
PU44
PU43
PU42
PU41
PU40
Address: FF3CH After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
PU12
0
PU123
0
PUmn
Selection of connection of on-chip pull-up resistor of Pmn (m = 2, 3, 4, or 12; n = 0 to 5)
0
Does not connect on-chip pull-up resistor
1
Connects on-chip pull-up resistor
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