M55800A Atmel Corporation, M55800A Datasheet - Page 91

• Manufacturer Part Number: M55800A
• Manufacturer: Atmel Corporation

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

WD Clock Mode Register
Name:
Access:
Reset Value: 0
Offset:
• WDCLKS: Clock Selection
• HPCV: High Preload Counter Value (Code Label WD_HPCV)
Counter is preloaded when watchdog counter is restarted with bits 0 to 11 set (FFF) and bits 12 to 15 equaling HPCV.
• CKEY: Clock Access Key (Code Label WD_CKEY)
Used only when writing WD_CMR. CKEY is read as 0.
0x06E: Write access in WD_CMR is allowed.
Other value: Write access in WD_CMR is prohibited.
1354D–ATARM–08/02
0
0
1
1
CKEY
WDCLKS
31
23
15
–
–
7
WD_CMR
Read/Write
0x04
0
1
0
1
30
22
14
–
–
6
–
Clock Selected
MCK/8
MCK/32
MCK/128
MCK/1024
29
21
13
–
–
5
28
20
12
–
–
4
CKEY
HPCV
27
19
11
–
–
3
26
18
10
–
–
2
WD_WDCLKS_MCK1024
WD_WDCLKS_MCK128
WD_WDCLKS_MCK32
WD_WDCLKS_MCK8
Code Label
WD_WDCLKS
AT91X40 Series
25
17
–
–
9
1
WDCLKS
24
16
–
–
8
0
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