AT91SAM7S256C-MU Atmel, AT91SAM7S256C-MU Datasheet - Page 305

• 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

29.7
Table 29-4.
6175K–ATARM–30-Aug-10
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
AT91SAM7S Series Preliminary
TWI_CWGR
TWI_MMR
TWI_IADR
TWI_RHR
TWI_THR
TWI_IMR
TWI_IDR
TWI_IER
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
–
-
0x0000
0x0000
0x0000
0x0008
0x0000
0x0000
0x0000
Reset
N/A
N/A
N/A
–
-
305