M55800A Atmel Corporation, M55800A Datasheet - Page 212

• Manufacturer Part Number: M55800A
• Manufacturer: Atmel Corporation

Specifications of M55800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 176
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 58
• Ext Interrupts: 58
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 3
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 72
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3/5.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

21. ADC: Analog-to-digital Converter
Table 21-1.
212
Pin Name
VDDA
GNDA
ADVREF
AD0 - AD7
AD0TRIG, AD1TRIG
AT91M5880A
ADC Pin Description
The AT91M55800A features two identical 4-channel 10-bit Analog-to-digital converters (ADC)
based on a Successive Approximation Register (SAR) approach.
Each ADC has 4 analog input pins (AD0 to AD3 and AD4 to AD7), digital trigger input pins
(AD0TRIG and AD1TRIG), and provides an interrupt signal to the AIC. Both ADCs share the
analog power supply pins (VDDA and GNDA) and the input reference voltage pin (ADVREF).
Figure 21-1. Block Diagram
AD0TRIG
AD1TRIG
ADVREF
GNDA
VDDA
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
Description
Analog power supply
Analog ground
Reference voltage
Analog input channels
External triggers
Analog-to-digital Converter
Analog-to-digital Converter
ADC 0
ADC 1
ADIRQ0
ADIRQ1
Peripheral
Advanced
1745F–ATARM–06-Sep-07
APB
Bus