AT91SAM7XC512 ATMEL Corporation, AT91SAM7XC512 Datasheet - Page 29

• Manufacturer Part Number: AT91SAM7XC512
• Description: At91 Arm Thumb-based Microcontrollers
• Manufacturer: ATMEL Corporation

9.5
9.6
9.7
9.8
6209BS–ATARM–03-Sep-06
Debug Unit
Periodic Interval Timer
Watchdog Timer
Real-time 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
• 32-bit free-running counter with alarm running on prescaled SLCK
AT91SAM7XC/512/256/128 Preliminary Summary
– 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 0x271C 0A40 (VERSION 0) for AT91SAM7XC512
– Chip ID is 0x271B 0940 (VERSION 0) for AT91SAM7XC256
– Chip ID is 0x271A 0740 (VERSION 0) for AT91SAM7XC128
peripherals
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