參數(shù)資料
型號： M37545GC-XXXGP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP32
封裝： 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù)： 14/65頁
文件大?。?/td> 782K
代理商： M37545GC-XXXGP
Rev.1.07
Mar 19, 2009
Page 19 of 60
REJ03B0140-0107
7545 Group
Termination of Unused Pins
1. Termination of common pins
I/O ports:
Select an input port or an output port and follow
each processing method.
Output ports: Open.
Input ports:
If the input level become unstable, through current
flow to an input circuit, and the power supply
current may increase.
Especially, when expecting low consumption
current (at STP or WIT instruction execution etc.),
pull-up or pull-down input ports to prevent
through current (built-in resistor can be used).
We recommend processing unused pins through a
resistor which can secure IOH(avg) or IOL(avg).
Table 8
Termination of unused pins
Pin
Termination 1 (recommend)
Termination 2 (recommend)
P00/KEY0
P07/KEY7
I/O port
When selecting key-on wakeup function, perform termination of input port.
P10
P11(RLSS-only pin)
When selecting N-channel open-drain for output structure, open.
P20 (LED0)/INT0
When selecting N-channel open-drain for output structure, connect to VSS
through a resistor. Or set its port latch to “0” and open.
P21 (LED1)/INT1
When selecting N-channel open-drain for output structure, connect to VSS
through a resistor. Or set its port latch to “0” and open.
P22 (LED2)
P27 (LED7)
When selecting N-channel open-drain for output structure, open.
P30
P37
When selecting N-channel open-drain for output structure, open.
P40 (LED8) (RLSS-only pin)
P41 (LED9) (RLSS-only pin)
P42/CARR
When selecting CARR output function, perform termination of output port.
VDDR
Connect to VSS.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37545GFGP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37545GFKP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37545GF-XXXGP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37545RLSS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37546G2GP 功能描述:MCU 2/5V 8K 32-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
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