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參數(shù)資料
| 型號： | M34282M2-XXXGP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 1 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | 0.225 INCH, 0.65 MM PITCH, PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 15/71頁 |
| 文件大?。?/td> | 547K |
| 代理商： | M34282M2-XXXGP |
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Rev.1.33
Mar 18, 2004
page 20 of 67
4282 Group
Remarks
Only key-on wakeup function of the port whose pull-down transistor is
turned ON by register PU1 is valid.
Only key-on wakeup function of the port whose pull-down transistor is
turned ON by register PU0 is valid.
Key-on wakeup function is always valid.
Return source
Ports D4–D7
Ports E0, E1, G
Ports E2
Return condition
Return by an external “H” level
input.
Return by an external “H” level
input.
Return by an external “H” level
input.
Table 8 Return source and return condition
(5) Pull-down control register
Registers PU0 and PU1 are 4-bit registers and control the
ON/OFF of pull-down transistor and key-on wakeup function
for ports E0, E1, G and ports D4–D7.
Table 9 Pull-down control registers
PU03
PU02
PU01
PU00
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Ports G2, G3 pull-down transistor control
bit
Ports G0, G1 pull-down transistor control
bit
Port E1 pull-down transistor control bit
Port E0 pull-down transistor control bit
Pull-down control register PU0
at reset : 00002
at RAM back-up : state retained
W
0
1
0
1
0
1
0
1
Note: “W” represents write enabled.
Set the contents of register PU0 or PU1 through register A
with the TPU0A or TPU1A instruction, respectively.
(4) Return signal
An external wakeup signal is used to return from the RAM
back-up mode. Table 8 shows the return condition for each
return source.
PU13
PU12
PU11
PU10
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Pull-down transistor OFF, key-on wakeup invalid
Pull-down transistor ON, key-on wakeup valid
Port D7 pull-down transistor control bit
Port D6 pull-down transistor control bit
Port D5 pull-down transistor control bit
Port D4 pull-down transistor control bit
Pull-down control register PU1
at reset : 00002
at RAM back-up : state retained
W
0
1
0
1
0
1
0
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34282T5-OPT | 制造商:Renesas Electronics Corporation 功能描述:DEV OPTION BOARD FOR 4282 GROUP/PC4400 - Boxed Product (Development Kits) |
| M34283 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34283G2GP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34283G2GP#U1 | 制造商:Renesas Electronics Corporation 功能描述:MICROCONTROLLER |
| M34283G2-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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