AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 294

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

29.6
Table 29-3.
294
0x0038 - 0x00FC
0x000C
0x002C
0x0000
0x0004
0x0008
0x0010
0x0020
0x0024
0x0028
0x0030
0x0034
Offset
TWI User Interface
AT91SAM7X512/256/128 Preliminary
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_IMR
TWI_IER
TWI_IDR
TWI_CR
TWI_SR
Name
–
-
Read-write
Read-write
Read-write
Read-write
Write-only
Read-only
Write-only
Write-only
Read-only
Read-only
Access
–
-
6120H–ATARM–17-Feb-09
0x0000
0x0000
0x0000
0x0008
0x0000
0x0000
0x0000
Reset
N/A
N/A
N/A
–
-