AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 150

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

21.2
150
Registers
AT89C5132
enabled by setting EADC bit in IEN1 register. This flag is set by hardware and must be reset by
software.
Table 31. ADCON Register
ADCON (S:F3h) – ADC Control Register
Reset Value = 0000 0000b
Table 32. ADCLK Register
ADCLK (S:F2h) – ADC Clock Divider Register
Reset Value = 0000 0000b
Bit Number
Bit Number
2 - 1
7 - 5
4 - 0
7
7
6
5
4
3
0
7
-
-
Mnemonic
Mnemonic
ADCD4:0
ADEOC
ADSST
ADIDL
ADIDL
ADEN
ADCS
Bit
Bit
6
6
-
-
-
-
Description
Reserved
The value read from this bit is always 0. Do not set this bit.
ADC Pseudo-Idle Mode
Set to suspend the CPU core activity (pseudo-idle mode) during conversion.
Clear by hardware at the end of conversion.
ADC Enable Bit
Set to enable the A to D converter.
Clear to disable the A to D converter and put it in low power stand by mode.
End Of Conversion Flag
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 Bit
Set to start an A to D conversion on the selected channel.
Cleared by hardware at the end of conversion.
Reserved
The value read from these bits is always 0. Do not set these bits.
Channel Selection Bit
Set to select channel 0 for conversion.
Clear to select channel 1 for conversion.
Description
Reserved
The value read from these bits is always 0. Do not set these bits.
ADC Clock Divider
5-bit divider for ADC clock generation.
ADEN
5
5
-
ADEOC
ADCD4
4
4
ADCD3
ADSST
3
3
ADCD2
2
2
-
ADCD1
1
1
-
4173E–USB–09/07
ADCD0
ADCS
0
0