AT91SAM7S256C-MU Atmel, AT91SAM7S256C-MU Datasheet - Page 399

• Manufacturer Part Number: AT91SAM7S256C-MU
• Description: IC ARM7 MCU 32BIT 256K 64-QFN
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S256C-MU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K 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: 64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• Processor Series: AT91
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: SPI, TWI, USART, USB
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 5
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• 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: -
• Lead Free Status / Rohs Status: Details
• Other names: AT91SAM7S256-MU; AT91SAM7S256-MU

31.7.9
Name:
Access Type:
• CD: Clock Divider
• FP: Fractional Part
0: Fractional divider is disabled.
1 - 7: Baudrate resolution, defined by FP x 1/8.
Note:
6175K–ATARM–30-Aug-10
1 to 65535
31
23
15
–
–
7
Fractional Part is not supported by AT91SAM7S32 and AT91SAM7S64.
CD
0
USART Baud Rate Generator Register
Baud Rate =
Selected Clock/16/CD
30
22
14
US_BRGR
Read-write
–
–
6
OVER = 0
29
21
13
–
–
5
SYNC = 0
Baud Rate =
Selected Clock/8/CD
USART_MODE
28
20
12
OVER = 1
–
–
4
CD
CD
Baud Rate Clock Disabled
≠
AT91SAM7S Series Preliminary
ISO7816
27
19
11
–
–
3
Baud Rate =
Selected Clock /CD
SYNC = 1
26
18
10
–
2
FP
25
17
–
9
1
Baud Rate = Selected
Clock/CD/FI_DI_RATIO
USART_MODE =
ISO7816
24
16
–
8
0
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