SAM7L128 Atmel Corporation, SAM7L128 Datasheet - Page 161

• 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

Table 20-4.
20.2.4.2
Table 20-5.
6257A–ATARM–20-Feb-08
Step
1
2
3
4
5
6
Step
1
2
3
4
5
6
7
8
Programmer Action
Sets MODE and DATA signals
Clears NCMD signal
Waits for RDY low
Releases MODE and DATA signals
Sets NCMD signal
Waits for RDY high
Programmer Action
Sets MODE and DATA signals
Clears NCMD signal
Waits for RDY low
Sets DATA signal in tristate
Clears NOE signal
Waits for NVALID low
Reads value on DATA Bus
Read Handshaking
Write Handshake
Read Handshake
For details on the read handshaking sequence, refer to
Figure 20-4.
MODE[3:0]
DATA[15:0]
NVALID
NCMD
Parallel Programming Timing, Read Sequence
NOE
RDY
1
Device Action
Waits for NCMD low
Latches MODE and DATA
Clears RDY signal
Executes command and polls NCMD high
Executes command and polls NCMD high
Sets RDY
Device Action
Waits for NCMD low
Latch MODE and DATA
Clears RDY signal
Waits for NOE Low
Sets DATA bus in output mode and outputs
the flash contents.
Clears NVALID signal
Waits for NOE high
2
Adress IN
ADDR
3
AT91SAM7L128/64 Preliminary
4
5
Z
6
Figure 20-4
7
Data OUT
8
9
and
Data I/O
Input
Input
Input
Input
Input
Input
DATA I/O
Input
Input
Input
Input
Tristate
Output
Output
Output
10
11
Table
X
12
20-5.
13
IN
161