AT91SAM7S321-AU-999 Atmel, AT91SAM7S321-AU-999 Datasheet - Page 24

• Manufacturer Part Number: AT91SAM7S321-AU-999
• Description: IC MCU ARM7 32KB FLASH 64LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S321-AU-999

• 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: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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-LQFP
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, JTAG, SPI, USART
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 32
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, KSK-AT91SAM7S-PL, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7S-EK
• Minimum Operating Temperature: - 40 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

8.8.3.5
8.8.3.6
Table 8-1.
24
Device
AT91SAM7S512
AT91SAM7S256
AT91SAM7S128
AT91SAM7S64
AT91SAM7S321/32
AT91SAM7S161/16
AT91SAM7S Series Preliminary
AT91SAM7S321/32
AT91SAM7S161/16
Flash Configuration Summary
If a locked-region’s erase or program command occurs, the command is aborted and the
LOCKE bit in the MC_FSR register rises and the interrupt line rises if the LOCKE bit has been
written at 1 in the MC_FMR register.
The 16 NVM bits are software programmable through the EFC User Interface. The command
“Set Lock Bit” enables the protection. The command “Clear Lock Bit” unlocks the lock region.
Asserting the ERASE pin clears the lock bits, thus unlocking the entire Flash.
The Embedded Flash Controller manages 8 lock bits to protect 8 regions of the flash against
inadvertent flash erasing or programming commands. The AT91SAM7S321/32 contains 8 lock
regions and each lock region contains 32 pages of 128 bytes. Each lock region has a size of 4
Kbytes.
If a locked-region’s erase or program command occurs, the command is aborted and the
LOCKE bit in the MC_FSR register rises and the interrupt line rises if the LOCKE bit has been
written at 1 in the MC_FMR register.
The 8 NVM bits are software programmable through the EFC User Interface. The command “Set
Lock Bit” enables the protection. The command “Clear Lock Bit” unlocks the lock region.
Asserting the ERASE pin clears the lock bits, thus unlocking the entire Flash.
The Embedded Flash Controller manages 8 lock bits to protect 8 regions of the flash against
inadvertent flash erasing or programming commands. The AT91SAM7S161/16 contains 8 lock
regions and each lock region contains 32 pages of 64 bytes. Each lock region has a size of 2
Kbytes.
If a locked-region’s erase or program command occurs, the command is aborted and the
LOCKE bit in the MC_FSR register rises and the interrupt line rises if the LOCKE bit has been
written at 1 in the MC_FMR register.
The 8 NVM bits are software programmable through the EFC User Interface. The command “Set
Lock Bit” enables the protection. The command “Clear Lock Bit” unlocks the lock region.
Asserting the ERASE pin clears the lock bits, thus unlocking the entire Flash.
Table 8-1
Number of Lock Bits
32
16
8
16
8
8
summarizes the configuration of the eight devices.
Number of Pages in the Lock Region
64
64
64
32
32
32
Page Size
256 bytes
256 bytes
256 bytes
128 bytes
128 bytes
64 bytes
6175K–ATARM–30-Aug-10