AT91SAM7S256C-MU Atmel, AT91SAM7S256C-MU Datasheet - Page 181

• 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

23.8.9
Register Name:
Access Type:
Reset Value:
• NFIQ: NFIQ Status
0 = nFIQ line is deactivated.
1 = nFIQ line is active.
• NIRQ: NIRQ Status
0 = nIRQ line is deactivated.
1 = nIRQ line is active.
23.8.10
Register Name:
Access Type:
• FIQ, SYS, PID2-PID3: Interrupt Enable
0 = No effect.
1 = Enables corresponding interrupt.
6175K–ATARM–30-Aug-10
PID31
PID23
PID15
PID7
31
23
15
31
23
15
–
–
–
7
–
7
AIC Core Interrupt Status Register
AIC Interrupt Enable Command Register
PID30
PID22
PID14
PID6
30
22
14
30
22
14
AIC_CISR
Read-only
0x0
–
–
–
6
–
AIC_IECR
Write-only
6
PID29
PID21
PID13
PID5
29
21
13
29
21
13
–
–
–
5
–
5
PID28
PID20
PID12
PID4
28
20
12
28
20
12
–
–
–
4
–
4
AT91SAM7S Series Preliminary
PID27
PID19
PID11
PID3
27
19
11
27
19
11
–
–
–
3
–
3
PID26
PID18
PID10
PID2
26
18
10
26
18
10
–
–
–
2
–
2
PID25
PID17
NIRQ
PID9
SYS
25
17
25
17
–
–
9
–
1
9
1
PID24
PID16
NIFQ
PID8
FIQ
24
16
24
16
–
–
8
–
0
8
0
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