AT91SAM7L64-AU Atmel, AT91SAM7L64-AU Datasheet - Page 112

• Manufacturer Part Number: AT91SAM7L64-AU
• Description: MCU ARM7 64K HS FLASH 128-LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7L64-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 36MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 80
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 1.55 V ~ 1.8 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-LQFP
• Controller Family/series: AT91SAM7xxx
• No. Of I/o's: 80
• Ram Memory Size: 6KB
• Cpu Speed: 36MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 6 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 36 MHz
• Number Of Programmable I/os: 80
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7L-EK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• For Use With: AT91SAM7L-STK - KIT EVAL FOR AT91SAM7LAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Figure 17-7. Shutdown of the Backup Power Supply After Writing SHDWEOF at 1
slow_clock
write_shdweof
write_shdweof_slck
lcd_eof
vddcore_nreset
vr_standby
flash_off
flash_poe
VDDCORE
sram_on
lcd_nreset
lcd_pump_on
rt_nreset
rt_on
supply_on
VDDBU
17.3.6.2
Controlling the Voltage Regulator
The Supply Controller can be used to control the embedded 1.8V voltage regulator.
The VRVDD field in the Supply Controller Mode Register, SUPC_MR, allows to select the output
voltage between 1.55V and 1.80V, depending on the performance required by the processor.
The VRDEEP field in the Supply Controller Mode Register, SUPC_MR, allows to switch the volt-
age regulator into deep mode, thus reducing its leakage current to a minimum.
The programmer can switch off the voltage regulator, and thus put the device in Backup Mode,
by writing the Supply Controller Control Register, SUPC_CR, with the VROFF bit at 1. This
asserts the vddcore_nreset signal after the write resynchronization time which lasts, in the worse
AT91SAM7L128/64 Preliminary
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6257A–ATARM–20-Feb-08