AT91SAM7L128-CU Atmel, AT91SAM7L128-CU Datasheet - Page 116

MCU ARM7 128K HS FLASH 144-LFBGA

AT91SAM7L128-CU

Manufacturer Part Number
AT91SAM7L128-CU
Description
MCU ARM7 128K HS FLASH 144-LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet

Specifications of AT91SAM7L128-CU

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
128KB (128K 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
144-LFBGA
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

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Figure 17-8. Wake Up Sources
17.3.7.1
17.3.7.2
116
WKUP15
WKUP0
WKUP1
FWUP
AT91SAM7L128/64 Preliminary
Force Wake Up
Wake Up Inputs
brown_out
rtc_alarm
Falling/Rising
Falling/Rising
Falling/Rising
Falling/Rising
WKUPT15
WKUPT0
WKUPT1
Detector
Detector
Detector
Detector
Edge
Edge
Edge
Edge
The Force Wake Up pin, FWUP is used to start up the backup power supply, as described in the
previous paragraphs. Then, when supply_on is asserted by the Supply Controller, the FWUP
can be used as a wake up source with a programmable debouncing period.
The FWUP pin is enabled as a wake up source by writing the FWUPEN bit to 1 in the Supply
Controller Wake Up Mode Register, SUPC_WUMR. Then, the FWUPDBC field in the same reg-
ister selects the debouncing period, which can be selected between 3, 32, 512, 4,096 or 32,768
slow clock cycles. This corresponds respectively to about 100 µs, about 1 ms, about 16 ms,
about 128 ms and about 1 second (for a typical slow clock frequency of 32 kHz). Programming
FWUPDBC to 0x0 selects an immediate wake up, i.e., the FWUP must be low during a minimum
of one slow clock period to wake up the core power supply.
If the FWUP pin is asserted for a time longer than the debouncing period, a wake up of the core
power supply is started and the FWUP bit in the Supply Controller Status Register, SUPC_SR, is
set and remains high until the register is read.
The wake up inputs, WKUP0 to WKUP15, can be programmed to perform a wake up of the core
power supply. Each input can be enabled by writing to 1 the corresponding bit, WKUPEN0 to
WKUPEN 15, in the Wake Up Inputs Register, SUPC_WUIR. The wake up level can be selected
with the corresponding polarity bit, WKUPPL0 to WKUPPL15, also located in SUPC_WUIR.
BODEN
RTCEN
WKUPEN15
WKUPEN0
WKUPEN1
FWUPEN
WKUPIS0
WKUPIS1
WKUPIS15
SLCK
SLCK
WKUPDBC
FWUPDBC
Debouncer
Debouncer
WKUPS
FWUP
6257A–ATARM–20-Feb-08
Core
Supply
Restart

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