T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 134

• Manufacturer Part Number: T89C51CC01
• Description: Enhanced 8-Bit Microcontroller
• Manufacturer: Atmel

Figure 59. ADC Description
Figure 60. Timing Diagram
Notes:
134
1. Tsetup min, see the AC Parameter for A/D conversion.
2. Tconv = 11 clock ADC = 1sample and hold + 10 bit conversion
AN0/P1.0
AN1/P1.1
AN2/P1.2
AN3/P1.3
AN4/P1.4
AN5/P1.5
AN6/P1.6
AN7/P1.7
T89C51CC01
The user must ensure that Tsetup time between setting ADEN and the start of the first conversion.
ADEOC
ADSST
ADEN
CLOCK
CLK
ADC
ADCON.2
SCH2
000
001
010
011
100
101
110
111
T
SETUP
ADCON.1
SCH1
(1)
Figure 60 shows the timing diagram of a complete conversion. For simplicity, the figure
depicts the waveforms in idealized form and do not provide precise timing information.
For ADC characteristics and timing parameters refer to the Section “AC Characteristics”
of the T89C51CC01 datasheet.
ADCON.5
Sample and Hold
ADEN
CONTROL
ADCON.0
SCH0
Rai
Cai
ADCON.3
ADSST
AVSS
ADCIN
+
-
T
CONV
(2)
VAREF
ADEOC
ADCON.4
R/2R DAC
VAGND
SAR
EADC
IEN1.1
10
8
2
ADDH
ADDL
ADC
Interrupt
Request
4129K–CAN–01/05