Chapter 3
eSL/eSLS Series (+ eSLZ000) User’s Manual
Peripheral Control
••••
93
3.6.1 Features
8-channel single-end analog inputs:
XP/YP touch panel input and general analog input share with ADIN0/1;
6-channel (ADIN2~7) and GPIO share with PORTC2~7
2-channel differential mode inputs (touch panel pin)
Supprts 4 wire resistance touch screen pen-down detection and XY
coordinates measurement
12-bit SAR ADC Block
•
12-bit SAR ADC
•
Up to 32kHz sampling rate
•
No miss code 11 bits
•
External reference supply (VREF)
•
Provide ½ VREF internal reference for MIC. AGC front end
3.6.2 Registers
Start A/D conversion is set with ADST bit. In Single mode, ADST bit is cleared
to “0” automatically when conversion on the specified channel is completed. In
Free Run mode, conversion continues sequentially on the specified channels
until this bit is cleared to “0” by software, by a reset, or by a transition to
Standby mode.
NOTE
Since ADC max convertion period is 512KHz when F
PLL
=16MHz, user must choose
ADCON[7:5] wisely. For example, ADCON[7:5] should be 010~110 when
F
PLL
=16MHz.
Содержание eSL Series
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