SAM7S32 Atmel Corporation, SAM7S32 Datasheet - Page 110

• Manufacturer Part Number: SAM7S32
• Manufacturer: Atmel Corporation

Specifications of SAM7S32

• Flash (kbytes): 32 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 21
• Ext Interrupts: 21
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Self Program Memory: NO
• 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): 3.0 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

19.2.4.1
110
SAM7S Series
Flash Programming
Figure 19-5. Command State Chart
In order to guarantee valid operations on the Flash memory, the field Flash Microsecond Cycle
Number (FMCN) in the Flash Mode Register MC_FMR must be correctly programmed (see
Flash Mode Register” on page
Several commands can be used to program the Flash.
The Flash technology requires that an erase must be done before programming. The entire
memory plane can be erased at the same time, or a page can be automatically erased by clear-
ing the NEBP bit in the MC_FMR register before writing the command in the MC_FCR register.
By setting the NEBP bit in the MC_FMR register, a page can be programmed in several steps if
it has been erased before (see
Write FCMD and PAGENB in MC_FCR
Check if PROGE flag set
Read Status: MC_FSR
Check if FRDY flag set
Read Status: MC_FSR
Check if FRDY flag set
Check if LOCKE flag set
Command Successful
Yes
Yes
No
No
116).
Figure
19-6).
No
No
Yes
Yes
Locking region violation
Bad keyword violation and/or Invalid command
6175L–ATARM–28-Jul-11
“MC