SAM7S32 Atmel Corporation, SAM7S32 Datasheet - Page 495
SAM7S32
Manufacturer Part Number
SAM7S32
Description
Manufacturer
Atmel Corporation
Specifications of SAM7S32
Flash (kbytes)
32 Kbytes
Pin Count
48
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
21
Ext Interrupts
21
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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34.6.11
Register Name:
Access Type:
Only the first 16 bits (internal channel counter size) are significant.
• CPRD: Channel Period
If the waveform is left-aligned, then the output waveform period depends on the counter source clock and can be
calculated:
If the waveform is center-aligned, then the output waveform period depends on the counter source clock and can be
calculated:
6175L–ATARM–28-Jul-11
– By using the Master Clock (MCK) divided by an X given prescaler value (with X being 1, 2, 4, 8, 16, 32, 64, 128,
– By using a Master Clock divided by one of both DIVA or DIVB divider, the formula becomes, respectively:
– By using the Master Clock (MCK) divided by an X given prescaler value (with X being 1, 2, 4, 8, 16, 32, 64, 128,
– By using a Master Clock divided by one of both DIVA or DIVB divider, the formula becomes, respectively:
31
23
15
7
256, 512, or 1024). The resulting period formula will be:
(
--------------------------------- -
(
-------------------------------------------- -
256, 512, or 1024). The resulting period formula will be:
(
--------------------------------------------
(
-------------------------------------------------------
X
CRPD
2
2
×
×
×
PWM Channel Period Register
MCK
X
CPRD
CPRD
MCK
MCK
×
MCK
×
CPRD
DIVA
)
×
DIVA
30
22
14
)
PWM_CPRD[0..X-1]
6
)
Read/Write
or
)
(
------------------------------------------------ -
CRPD
or
(
-------------------------------------------------------
2
MCK
×
×
CPRD
DIVAB
29
21
13
MCK
5
×
)
DIVB
)
28
20
12
4
CPRD
CPRD
CPRD
CPRD
27
19
11
3
26
18
10
2
SAM7S Series
25
17
9
1
24
16
8
0
495
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