SAM7L128 Atmel Corporation, SAM7L128 Datasheet - Page 495

• 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

34.5.1
34.5.1.1
6257A–ATARM–20-Feb-08
Clock Generation
Block Diagram
Figure 34-2. Clock Generation Block Diagram
SLCDC_FRR
SLCDC_MR
SLCDC_DR
SCLK
LPMODE
COMSEL
SEGSEL
BUFFTIME
LCDBLKFREQ
Prescaler
PRESC
DIV
clk
SLCDC
SCLK/1024
SCLK/8
AT91SAM7L128/64 Preliminary
Clock
Mux
COM + SEG Waveform Generator
Buffer driving time management
COMSEL
Timing Generation
Com./Rate Uniformizer
Blinking generator
/16
/2
Divider (1 to 8)
ENDFRAME
Buffer_on
Blink period
LCD COM
Waveform
Generator
LCD SEG
Waveform
Generator
clk
SLCDC
495