AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 316

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

29.7.8
Register Name:
Access Type:
• TXCOMP: Transmission Completed
• RXRDY: Receive Holding Register Ready
• TXRDY: Transmit Holding Register Ready
• NACK: Not Acknowledge
0 = The corresponding interrupt is disabled.
1 = The corresponding interrupt is enabled.
29.7.9
Register Name:
Access Type:
• RXDATA: Receive Holding Data
31
23
15
31
23
15
–
–
–
7
–
–
–
–
7
TWI Interrupt Mask Register
TWI Receive Holding Register
30
22
14
30
22
14
TWI_IMR
Read-only
–
–
–
6
–
TWI_RHR
Read-only
–
–
–
6
29
21
13
29
21
13
–
–
–
5
–
–
–
–
5
28
20
12
28
20
12
–
–
–
4
–
–
–
–
4
RXDATA
27
19
11
27
19
11
–
–
–
3
–
–
–
–
3
TXRDY
26
18
10
26
18
10
–
–
–
2
–
–
–
2
SAM7S Series [DATASHEET]
RXRDY
6175M–ATARM–26-Oct-12
25
17
25
17
–
–
9
–
1
–
–
9
–
1
TXCOMP
NACK
24
16
24
16
–
–
8
0
–
–
8
–
0
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