M55800A Atmel Corporation, M55800A Datasheet - Page 52

• 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

12. APMC: Advanced Power Management Controller
52
AT91M5880A
The AT91M55800A features an Advanced Power Management Controller, which optimizes both
the power consumption of the device and the complete system. The APMC controls the clocking
elements such as the oscillators and the PLL, the core and the peripheral clocks, and has the
capability to control the system power supply.
Main Power is used throughout this document to identify the voltages powering the
AT91M55800A and other components of the system, with the exception of the Battery Backup
voltage, which is applied to the VDDBU. Main Power supplies VDDIO, VDDCORE and, if
required, the analog voltage VDDA. A battery or battery capacitor generally supplies the Battery
Backup Power.
The APMC consists of the following elements:
Figure 12-1. APMC Module
Note:
• The RTC Oscillator, which provides the Slow Clock at 32768 Hz.
• The Main Oscillator, which provides a clock that depends on the frequency of the crystal
• The Phase Lock Loop.
• The ARM Core Clock Controller, which allows entry to the Idle Mode.
• The Peripheral Clock Controller, which conserves the power consumption of unused
• The Master Clock Output Controller.
• The Shut-down Logic, which controls the Main Power.
connected to the XIN and XOUT pins.
peripherals.
The RTC peripheral is described in a separate section.
WAKEUP
NRSTBU
XOUT32
XIN32
XOUT
XIN
VDDBU
VDDIO/VDDCORE
Main OSC
Reset Control
OSC
RTC
OSC Timer
Advanced Peripheral Bus
PLL
PLL Timer
Shut-down
Logic
RTC
Alarm
(1)
Control
Device
Clock
Control
APMC
IRQ
0
n
ARM Interrupt (IRQ and FIQ)
SLCKIRQ
APMCIRQ
Slow Clock_SLCK
Arm Clock
SHDN
1745F–ATARM–06-Sep-07
Peripheral Clocks