M55800A Atmel Corporation, M55800A Datasheet - Page 66
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
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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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