AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 309

• 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
Table 29-4.
0x0038 - 0x00FC
0x000C
0x002C
0x0000
0x0004
0x0008
0x0010
0x0020
0x0024
0x0028
0x0030
0x0034
Offset
Two-wire Interface (TWI) User Interface
Register Mapping
Register
Control Register
Master Mode Register
Reserved
Internal Address Register
Clock Waveform Generator Register
Status Register
Interrupt Enable Register
Interrupt Disable Register
Interrupt Mask Register
Receive Holding Register
Transmit Holding Register
Reserved
TWI_CWGR
TWI_MMR
TWI_IADR
TWI_RHR
TWI_THR
TWI_IDR
TWI_IMR
TWI_IER
TWI_CR
TWI_SR
Name
–
-
SAM7S Series [DATASHEET]
Read-write
Read-write
Read-write
Read-write
Write-only
Read-only
Write-only
Write-only
Read-only
Read-only
Access
–
-
6175M–ATARM–26-Oct-12
0x0000
0x0000
0x0000
0x0008
0x0000
0x0000
0x0000
Reset
N/A
N/A
N/A
–
-
309