SAM7S32 Atmel Corporation, SAM7S32 Datasheet - Page 272

• 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

28.6.3.2
Figure 28-6. Master Mode Flow Diagram S
272
SAM7S Series
Master Mode Flow Diagram
1
SPI_RDR(RD) = Serializer
Serializer = SPI_TDR(TD)
NPCS = SPI_TDR(PCS)
Delay DLYBCT
Delay DLYBCS
Delay DLYBS
Data Transfer
NPCS = 0xF
SPI Enable
TDRE = 1
RDRF = 1
CSAAT ?
CSAAT ?
TDRE ?
TDRE ?
0
0
1
0
PS ?
1
peripheral
Variable
0
1
1
0
NPCS = SPI_MR(PCS)
peripheral
Fixed
NPCS = SPI_TDR(PCS)
- NPCS defines the current Chip Select
- CSAAT, DLYBS, DLYBCT refer to the fields of the
- When NPCS is 0xF, CSAAT is 0.
Chip Select Register corresponding to the Current Chip Select
SPI_TDR(PCS)
Delay DLYBCS
NPCS = 0xF
= NPCS ?
no
1
PS ?
peripheral
Variable
0
yes
peripheral
Fixed
NPCS = SPI_MR(PCS),
Delay DLYBCS
SPI_MR(PCS)
NPCS = 0xF
= NPCS ?
no
SPI_TDR(PCS)
6175L–ATARM–28-Jul-11