M55800A Atmel Corporation, M55800A Datasheet - Page 66
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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
- M40800 PDF datasheet #2
- M55800A PDF datasheet #3
- M55800A PDF datasheet #4
- M55800A PDF datasheet #5
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- Download datasheet (5Mb)
12.9.7
Register Name:
Access Type:
Reset Value:
Offset:
• MOSCBYP: Main Oscillator Bypass (Code Label APMC_MOSC_BYP)
0 = Crystal must be connected between XIN and XOUT.
1 = External clock must be provided on XIN.
• MOSCEN: Main Oscillator Enable (Code Label APMC_MOSC_EN)
0 = Main Oscillator is disabled.
1 = Main Oscillator is enabled.
Note:
• MCKODS: Master Clock Output Disable (Code Label APMC_MCKO_DIS)
0 = The MCKO pin is driven with the Master Clock (MCK).
1 = The MCKO pin is tri-stated.
• PRES: Prescaler Selection
66
0
0
0
0
1
1
1
1
31
23
15
–
7
–
When operating in Bypass Mode, the Main Oscillator must be disabled. MOSCEN and MOSCBYP bits must never be set
together.
AT91M5880A
APMC Clock Generator Mode Register
CSS
PRES
0
0
1
1
0
0
1
1
30
22
14
APMC_CGMR
Read/Write
0x0
0x20
–
6
0
1
0
1
0
1
0
1
PRES
Prescaler Selected
None. Prescaler Output is the selected clock.
Selected clock is divided by 2
Selected clock is divided by 4
Selected clock is divided by 8
Selected clock is divided by 16
Selected clock is divided by 32
Selected clock is divided by 64
Reserved
29
21
13
5
28
20
12
4
OSCOUNT
27
19
11
–
3
PLLCOUNT
MUL
MCKODS
26
18
10
2
Code Label
APMC_PRES_NONE
APMC_PRES_DIV2
APMC_PRES_DIV4
APMC_PRES_DIV8
APMC_PRES_DIV16
APMC_PRES_DIV32
APMC_PRES_DIV64
–
MOSCEN
25
17
9
1
1745F–ATARM–06-Sep-07
MOSCBYP
24
16
8
0
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