AT83EB5114 Atmel Corporation, AT83EB5114 Datasheet - Page 64

• Manufacturer Part Number: AT83EB5114
• Manufacturer: Atmel Corporation

Specifications of AT83EB5114

• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 11
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 50
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Operating Voltage (vcc): 3.0 to 3.6
• Timers: 4
• Mask Rom (kbytes): 4
• Watchdog: Yes

64
AT89/83EB5114
Reset Value = X000 0000b
Table 49. ADCLK Register
ADCLK (S:F2h)
ADC Clock Prescaler
Reset Value = 0000 0000b
Table 50. ADDH Register
ADDH (S:F5h Read Only)
ADC Data High byte register
Read only register
Reset Value = 00h
SELREF
Number
Number
Number
ADAT 9
Bit
Bit
Bit
2-0
6-0
7-0
7
7
5
4
3
7
Mnemonic Description
Mnemonic Description
Mnemonic Description
SELREF
ADAT 8
ADAT9:2
ADEOC
SCH2:0
PRS6:0
ADSST
PRS 6
ADEN
Bit
Bit
Bit
6
6
sc
Enable/Standby Mode
Set to enable ADC.
Clear for Standby mode.
End Of Conversion
Set by hardware when ADC result is ready to be read. This flag can generate an
interrupt.
Must be cleared by software.
Start and Status
Set to start an A/D conversion.
Cleared by hardware after completion of the conversion.
Selection of channel to convert
see Table 45 on page 60.
Selection and activation of the internal 2.4V voltage reference
Set to enable the internal voltage reference.
Clear to disable the internal voltage reference.
Clock Prescaler
f
ADC result
bits 9-2
CONV_CK
ADAT 7
PRS 5
if PRS=0, f
5
5
= f
CkADC
CONV_CK
ADAT 6
PRS 4
/ (2 * PRS)
4
4
= f
CkADC
ADAT 5
PRS 3
/ 256
3
3
ADAT 4
PRS 2
2
2
ADAT 3
PRS 1
1
1
4311C–8051–02/08
ADAT 2
PRS 0
0
0