AT91SAM7S32B-MU Atmel, AT91SAM7S32B-MU Datasheet - Page 209

• Manufacturer Part Number: AT91SAM7S32B-MU
• Description: IC MCU ARM7 32KB FLASH 48-VQFN
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S32B-MU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

25.9.10
Register Name:
Access Type:
• CSS: Master Clock Selection
• PRES: Processor Clock Prescaler
6175K–ATARM–30-Aug-10
31
23
15
–
–
–
7
–
PMC Master Clock Register
0
0
0
0
1
1
1
1
0
0
1
1
30
22
14
PMC_MCKR
Read-write
–
–
–
6
–
29
21
13
–
–
–
5
–
CSS
PRES
0
0
1
1
0
0
1
1
28
20
12
–
–
–
4
0
1
0
1
AT91SAM7S Series Preliminary
PRES
27
19
11
–
–
–
3
0
1
0
1
0
1
0
1
Clock Source Selection
Slow Clock is selected
Main Clock is selected
Reserved
PLL Clock is selected.
26
18
10
–
–
–
2
Processor Clock
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Reserved
25
17
–
–
–
9
1
CSS
24
16
–
–
–
8
0
209