TCC720 Datasheet, PDF (100/143 Pages) List of Unclassifed Manufacturers – 32-bit RISC Microprocessor For Digital Media Player

TCC720
MISCELLANEOUS PERIPHERALS
32-bit RISC Microprocessor for Digital Media Player
Dec. 16. 2002
Preliminary Spec 0.51
11 MISCELLANEOUS PERIPHERALS
11.1 ADC
The TCC720 has 3-input general purpose low-power ADC for battery level detection, remote
control interface, touch screen interface, etc. It is a CMOS type 8bit/10bit changeable A/D
converter which combines suitable blocks for various purpose such as an analog input
multiplexer, auto offset calibration comparator, 8bit/10bit changeable successive approximation
register (SAR), etc.
Various operating option can be set by using ADCCON register, it can convert up to 8 analog
input and be operated as 10bit ADC at about 200ksps rates, as well as 8bit ADC at about
250ksps rates. It has standby mode for power consumption also.
The output of ADC can be read from the ADCDATA register.
ADC Control Register (ADCCON)
31 30 29 28 27 26 25
15 14 13 12 11 10 9
0
24 23 22
0
876
ADEN
0x80000A00
21 20 19 18 17 16
543210
STB M8
ASEL
ADEN [8:5]
adc
ADC Sample Rate Select
Sample Rate = f_PCLK / ((adc+1) * 16)
STB [4]
1
0
ADC Standby Select
ADC goes to standby mode
ADC starts operating
M8 [3]
1
0
ADC Bit Select
Select 8bit conversion mode
Select 10bit conversion mode
ASEL [2:0]
n
ADC Input Select
ADINn pin is selected as ADC input signal (n = one of 0, 2, 4)
11 - 1