AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 29

• 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

9.5
9.6
9.7
6120H–ATARM–17-Feb-09
Debug Unit
Periodic Interval Timer
Watchdog Timer
• Vectoring
• Protect Mode
• Fast Forcing
• General Interrupt Mask
• Comprises:
• Two-pin UART
• Debug Communication Channel Support
• Chip ID Registers
• 20-bit programmable counter plus 12-bit interval counter
• 12-bit key-protected Programmable Counter running on prescaled SLCK
• Provides reset or interrupt signals to the system
• Counter may be stopped while the processor is in debug state or in idle mode
– Higher priority interrupts can be served during service of lower priority interrupt
– Optimizes interrupt service routine branch and execution
– One 32-bit vector register per interrupt source
– Interrupt vector register reads the corresponding current interrupt vector
– Easy debugging by preventing automatic operations
– Permits redirecting any interrupt source on the fast interrupt
– Provides processor synchronization on events without triggering an interrupt
– One two-pin UART
– One Interface for the Debug Communication Channel (DCC) support
– One set of Chip ID Registers
– One Interface providing ICE Access Prevention
– USART-compatible User Interface
– Programmable Baud Rate Generator
– Parity, Framing and Overrun Error
– Automatic Echo, Local Loopback and Remote Loopback Channel Modes
– Offers visibility of COMMRX and COMMTX signals from the ARM Processor
– Identification of the device revision, sizes of the embedded memories, set of
– Chip ID is 0x275C 0A40 (VERSION 0) for AT91SAM7X512
– Chip ID is 0x275B 0940 (VERSION 0) for AT91SAM7X256
– Chip ID is 0x275A 0740 (VERSION 0) for AT91SAM7X128
peripherals
AT91SAM7X512/256/128 Preliminary
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