AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 205
AT91SAM7A1-AU
Manufacturer Part Number
AT91SAM7A1-AU
Description
IC ARM7 MCU 32BIT ROMLESS144LQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7A1-AU
Core Processor
ARM7
Core Size
16/32-Bit
Speed
40MHz
Connectivity
CAN, EBI/EMI, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
49
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
For Use With
AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 205 of 389
- Download datasheet (5Mb)
20.3.11
Name:
Access:
Offset:
• LOAD: Channel 0 Preload Value
Gives the instruction to the timer; i.e., from which counter value the Simple Timer has to decrement.
20.3.12
Name:
Access:
Offset:
• PRESCALAR: Channel 1 Prescalar
• SELECTCLK: Select Clock
0: The divider_clock_1 is generated by the divider driven by the SYSCAL bits.
1: The divider_clock_1 is connected to the low frequency clock.
• AUTOREL: Auto Reload
0: The counter is not automatically reloaded with the COUNTER[15:0] value when it reaches 0x0000.
1: The counter is automatically reloaded with the COUNTER[15:0] value when it reaches 0x0000.
• SYSCAL: System Clock Prescalar Value
This prescalar is used to divide the CORECLK when the system clock is selected (SELECTCLK = 0).
A write in this register can only be done if CHENS1 = 0 (i.e., channel 1 is disabled).
6048B–ATARM–29-Jun-06
31
23
15
31
23
15
–
–
7
–
–
7
–
ST Channel 0 Counter Register
ST Channel 1 Prescalar Register
ST_CT0
Read/Write
0x084
ST_PR1
Read/Write
0x088
Channel 1 counter_clock_frequency
divider_clock_1
30
22
14
30
22
14
–
–
6
–
–
6
–
AUTOREL
=
29
21
13
29
21
13
–
–
5
–
–
5
CORECLK
SELECTCLK
28
20
12
28
20
12
–
–
4
–
–
4
2
=
SYSCAL
divider_clock_2
LOAD
LOAD
SYSCAL
27
19
11
27
19
11
+
–
–
3
–
–
3
1
2
PRESCALAR
26
18
10
26
18
10
–
–
2
–
2
PRESCALAR
SYSCAL
AT91SAM7A1
25
17
25
17
–
–
9
1
–
9
1
24
16
24
16
–
–
8
0
–
8
0
205
Related parts for AT91SAM7A1-AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
MCU ARM9 64K SRAM 144-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM7 MCU FLASH 256K 100LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MPU 217-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM9 ULTRA LOW PWR 217-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM9 324-TFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU ARM9 SAMPLING 217CBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MCU 217-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MCU 208-PQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM 512K HS FLASH 100-LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM 512K HS FLASH 100-TFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MCU 200 MHZ 324-TFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM MCU 16BIT 128K 256BGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM7 MCU 32BIT 128K 64LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM7 MCU FLASH 256K 128-LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM7 MCU FLASH 512K 128-LQFP
Manufacturer:
Atmel
Datasheet: