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| 型號： | SH2165-FGT |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, 0.50 MM PITCH, ROHS COMPLIANT, LQFP-64 |
| 文件頁數(shù)： | 33/33頁 |
| 文件大?。?/td> | 354K |
| 代理商： | SH2165-FGT |
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SH2165
FUNCTION MODE FOR KEYBOARD
Copyright 1999-2005 Semtech Corporation
SH2165 data sheet v1.08 (2005-05-17)
www.semtech.com
9
The SH2165 includes a single-byte register for function mode. There are three function modes:
simple, sticky
and
lock.
(Note that for this the section, the function key can be any combination of the left and right function keys.)
Function mode pin
If the FNMOD pin (pin 35) is tied to ground, the function mode is simple; if it is left floating, the function mode is
sticky. (Note that lock mode can be set only in the EEPROM, not with this pin.)
The FNMOD pin state can be overridden by the contents of the EEPROM.
EEPROM function register
Offset
Register
Valid values
0x0FC1
Function mode
0x00-0x02 (0: simple; 1: sticky; 2: lock)
If the EEPROM is present and valid, and this register location contains a valid value, the SH2165 uses that value for
the function mode, regardless of the state of the FNMOD pin.
Function mode description: simple mode
In
simple mode (the default), the function-key-down state turns on when the function key is pressed, and turns off
when the function key is released. In other words, function key state always changes according to this scenario:
Function-key-down state is off
Function key is pressed
Function-key-down state turns on
0 or more other keys are pressed
Function key is released
Function-key-down state turns off
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