M55800A Atmel Corporation, M55800A Datasheet - Page 60
M55800A
Manufacturer Part Number
M55800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M55800A.pdf
(29 pages)
4.M55800A.pdf
(256 pages)
5.M55800A.pdf
(28 pages)
Specifications of M55800A
Flash (kbytes)
0 Kbytes
Pin Count
176
Max. Operating Frequency
33 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
58
Ext Interrupts
58
Usb Speed
No
Usb Interface
No
Spi
1
Uart
3
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
72
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Self Program Memory
NO
External Bus Interface
1
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3/5.0
Fpu
No
Mpu / Mmu
no / no
Timers
6
Output Compare Channels
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- M40800 PDF datasheet
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- M55800A PDF datasheet #3
- M55800A PDF datasheet #4
- M55800A PDF datasheet #5
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Figure 12-7. Shut-down and Wake-up Features
12.7
60
Alarm
AT91M5880A
Power
Supply
Resistor
required by
some DC/DC
Converters
DC/DC Converter
SHD
To accommodate the different types of main power supply available, and different signals that
can command the shut-down of this device, tri-state, level 0 and level 1 are user-definable for
the Shut-down pin. The Wake-up pin can be configured as detected on the positive or negative
edge, and at high or low level. They are selected by the SHDALS and WKACKS fields in
APMC_PMR.
If the Shut-down feature is not used, the pin SHDN can be used as an Alarm Output Signal from
the RTC Alarm. The Alarm State corresponds to Shut-down, and the Acknowledge or Non-Alarm
State corresponds to Wake-up.
The alarm control logic is the same as that for Shut-down. The SHDALC command in
APMC_PCR (defined by the field SHDALS in APMC_PMR) and the WKACKS command in
APMC_PCR (defined by the field WKACKS field in APMC_PMR) control the SHDN pin.
The alarm can be positioned by an RTC Alarm and be acknowledged by a programmable edge
on the WAKEUP pin. The Backup Reset initializes the logic in Non-Alarm State.
Main Start Up
Battery
Backup
Shut-down
Jumper
Disable
+
-
VDDIO
VDDCORE
GND
VDDBU
NRSTBU
GNDBU
SHDN
WAKE-UP
AT91M55800
1745F–ATARM–06-Sep-07
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