參數(shù)資料
型號: μPDPD30101
廠商: NEC Corp.
英文描述: 64-Bit Micro[rocessor(64位微處理器)
中文描述: 64位微[rocessor(64位微處理器)
文件頁數(shù): 53/97頁
文件大小: 409K
代理商: ΜPDPD30101
μ
PD30101
52
14. PIU (TOUCH PANEL INTERFACE UNIT)
14.1 General
The PIU detects the X and Y coordinates on a panel touched by the pin by using an external A/D converter. It also
measures battery voltage.
As the external A/D converter, the TLV1543 (conversion accuracy: 10 bits) and TLC2543C (conversion accuracy: 12
bits) are supported.
Table 14-1. PIU Registers
Symbol
Function
PIUDATAREG
Touch panel data register
PIUCNTREG
PIU control register
PIUINTREG
PIU interrupt register
PIUSIVLREG
Keyboard scan sampling cycle setting register
PIUSTBLREG
A/D converter control register
PIUCMDREG
A/D converter command register
PIUCIVLREG
PIU count register
14.2 Example of External Circuit Configuration
Touch
panel
Main
battery
Sub
battery
Driver
A/D
converter
4
2
2
2
PENCONT (0 : 4)
Penchgintr
V
R
4101
PIU
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