參數(shù)資料
型號: UPD78F9211CS-CAB-A
廠商: Renesas Electronics America
文件頁數(shù): 147/175頁
文件大?。?/td> 0K
描述: MCU 8BIT 2KB FLASH 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(zhuǎn)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
71
(4) Pull-up resistor option registers (PU2 to PU4)
These registers are used to specify whether an on-chip pull-up resistor is connected to P20 to P23, P32, and
P40 to P47. By setting PU2 to PU4, an on-chip pull-up resistor can be connected to the port pin corresponding
to the bit of PU2 to PU4.
PU2 to PU4 are set by using a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation set these registers to 00H.
Figure 4-11. 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
PU32
0
Address: FF34H, After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
PU4
PU47
PU46
PU45
PU44
PU43
PU42
PU41
PU40
PUmn
Selection of connection of on-chip pull-up resistor of Pmn (m = 2 to 4; n = 0 to 7)
0
Does not connect on-chip pull-up resistor
1
Connects on-chip pull-up resistor
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