AT91M40800-33AI Atmel, AT91M40800-33AI Datasheet - Page 91
AT91M40800-33AI
Manufacturer Part Number
AT91M40800-33AI
Description
IC ARM7 MCU 100 TQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheets
1.AT91M40800-33AU.pdf
(18 pages)
2.AT91R40807-33AI.pdf
(153 pages)
3.AT91M40800-33AI.pdf
(21 pages)
Specifications of AT91M40800-33AI
Core Processor
ARM7
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, UART/USART
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91M40800-33AI
Manufacturer:
ATMEL
Quantity:
40
Company:
Part Number:
AT91M40800-33AI
Manufacturer:
QFP
Quantity:
319
Part Number:
AT91M40800-33AI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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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