SAM7L128 Atmel Corporation, SAM7L128 Datasheet - Page 14

• Manufacturer Part Number: SAM7L128
• Manufacturer: Atmel Corporation

Specifications of SAM7L128

• Flash (kbytes): 128 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 36 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 80
• Ext Interrupts: 80
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Segment Lcd: 40
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 460
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 6
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.8 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

5.3
Figure 5-1.
5.4
14
WKUP15
WKUP0
WKUP1
FWUP
Wake-up Sources
Fast Start-Up
AT91SAM7L128/64 Preliminary
Wake Up Sources
brown_out
rtc_alarm
Falling/Rising
Falling/Rising
Falling/Rising
WKUPT15
WKUPT0
WKUPT1
Detector
Detector
Detector
Detector
Falling
Edge
Edge
Edge
Edge
The wake-up events allow the device to exit from backup mode. When a wake-up event is
detected, the supply controller performs a sequence which automatically reenables the voltage
regulator and the backup SRAM power supply, if it is not already enabled.
The SAM7L128/64 allows the processor to restart in a few microseconds while the processor is
in wait mode. A fast start up can occur upon detection of a low level on one of the 16 wake-up
inputs.
The fast restart circuitry, as shown in
up signal to the power management controller. As soon as the fast start-up signal is asserted,
the PMC automatically restarts the embedded 2 MHz Fast RC oscillator, switches the master
clock on this 2 MHz clock and reenables the processor clock, if it is disabled.
BODEN
RTCEN
WKUPEN15
WKUPEN0
WKUPEN1
FWUPEN
WKUPIS0
WKUPIS15
WKUPIS1
SLCK
SLCK
Figure
FWUPDBC
WKUPDBC
Debouncer
Debouncer
5-2, is fully asynchronous and provides a fast start-
WKUPS
FWUP
6257A–ATARM–20-Feb-08
Core
Supply
Restart