參數(shù)資料
型號： UPD17242UC-XXX-5A4
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30
封裝： 0.300 INCH, PLASTIC, SSOP-30
文件頁數(shù)： 44/102頁
文件大?。?/td> 953K
代理商： UPD17242UC-XXX-5A4
46
Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
0
P1BPU0
Address
RF: 15H
After reset
0H
R/W
1
P1BKEY0
2
P1BHL0
3
0
P1BHL0
0
1
Resistor is connected (P1BPU0 = 1) Resistor is not connected (P1BPU0 = 0)
Connects pull-down/pull-up resistor to P1B0
Pull-up resistor
Pull-down resistor
No resistor
P1BPU0
0
1
Connects resistor to P1B0
P1BKEY0
0
1
Selects whether P1B0 is used for key matrix or not
When key matrix is used (P1BKEY0 = 1)
P1BHL0
0
1
Resistor is connected (P1BPU0 = 1) Resistor is not connected (P1BPU0 = 0)
Connects pull-down/pull-up resistor to P1B0 and
selects standby mode release condition
Pull-up resistor
Standby mode is released when a low level is input to P1B.
Pull-down resistor
Standby mode is released when a high level is input to P1B.
No resistor
When key matrix is not used (P1BKEY0 = 0)
P1B0 not used for key matrix
P1B0 used for key matrix
Not connected
Connected
3.14 Selecting Whether Key Matrix Is Used, Standby Mode Release Condition, and Whether
Pull-Up or Pull-Down Resistor Is Connected (Port 1B)
Whether a key matrix is used or not, whether a resistor is connected to P1B or not, whether a pull-up or pull-down
resistor is connected, and the standby mode release condition can be specified by using the following register file.
Caution The standby mode is not released by P1B when a key matrix is not used.
相關(guān)PDF資料
PDF描述
UPD178F054 78K/0 Series for Instructions | User＇s Manual[10/2001]
UPD178F124 78K/0 Series for Instructions | User＇s Manual[10/2001]
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