參數(shù)資料
型號: M37548G2-XXXFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封裝: 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件頁數(shù): 20/86頁
文件大?。?/td> 1437K
代理商: M37548G2-XXXFP
Rev.2.02
Mar 31, 2009
Page 25 of 81
REJ03B0210-0202
7548 Group
Key Input Interrupt (Key-On Wakeup)
A key-on wakeup interrupt request is generated by applying “L”
level to any pin of port P1 that has been set to input mode.
In other words, it is generated when the AND of input level goes
from “1” to “0”. An example of using a key input interrupt is
shown in Figure 24, where an interrupt request is generated by
pressing one of the keys provided as an active-low key matrix
which uses ports P10 to P13 as input ports.
Fig 24. Connection example when using key input interrupt and port P1 block diagram
Key input interrupt request
* P-channel transistor for pull-up
** CMOS output buffer
Port P15
latch
**
*
P15 output
**
*
**
*
**
*
**
*
**
*
Port P1
Input read circuit
Port P1 pull-up control register
bit 5 = “0”
Port PXx
“L” level output
Port P15
Direction register = “1”
P14 output
Port P14 key-on wakeup
selection bit
Port P15 key-on wakeup
selection bit
Port P1 pull-up control register
bit 4 = “0”
Port P14
latch
Port P14
Direction register = “1”
Falling edge
detection
Falling edge
detection
Falling edge
detection
Falling edge
detection
Falling edge
detection
Falling edge
detection
P13 input
P12 input
P11 input
P10 input
Port P13 key-on wakeup
selection bit
Port P1 pull-up control register
bit 3 = “1”
Port P13
Direction register = “0”
Port P13
latch
Port P12 key-on wakeup
selection bit
Port P1 pull-up control register
bit 2 = “1”
Port P12
Direction register = “0”
Port P12
latch
Port P10 key-on wakeup
selection bit
Port P1 pull-up control register
bit 0 = “1”
Port P10
Direction register = “0”
Port P10
latch
Port P11 key-on wakeup
selection bit
Port P1 pull-up control register
bit 1 = “1”
Port P11
Direction register = “0”
Port P10
latch
相關(guān)PDF資料
PDF描述
M37548G2FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
M37548G1FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
M37549G1-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24
M37549G3-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24
M37560M8-XXXFP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37548G3FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37548G3FP#U0 功能描述:MCU 6K ROM 256K 20-SSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C,Microwire,SPI,SSI,SSP,UART/USART,USB 外圍設(shè)備:欠壓檢測/復(fù)位,POR,WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:96KB(96K x 8) 程序存儲(chǔ)器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 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:48-LQFP 包裝:托盤 其它名稱:568-9587
M37548G3-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37549G1FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37549G1-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER