AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 311

• 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

29.7.2
Register Name:
Address Type:
• IADRSZ: Internal Device Address Size
Table 29-5.
• MREAD: Master Read Direction
0 = Master write direction.
1 = Master read direction.
• DADR: Device Address
The device address is used to access slave devices in read or write mode.
31
23
15
–
–
–
7
–
0
0
1
1
IADRSZ[9:8]
TWI Master Mode Register
30
22
14
TWI_MMR
Read-write
–
–
6
–
0
1
0
1
No internal device address (Byte command protocol)
One-byte internal device address
Two-byte internal device address
Three-byte internal device address
29
21
13
–
–
5
–
MREAD
28
20
12
–
4
–
DADR
27
19
11
–
–
3
–
26
18
10
–
–
2
–
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
25
17
–
9
1
–
IADRSZ
24
16
–
8
0
–
311