AT91SAM7SE256B-CUR Atmel, AT91SAM7SE256B-CUR Datasheet - Page 553

• Manufacturer Part Number: AT91SAM7SE256B-CUR
• Description: IC ARM7 MCU FLASH 256K 128-LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE256B-CUR

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: EBI/EMI, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 88
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Processor Series: SAM7SE256
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: SPI, USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 88
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: AT91SAM7SE256B
• Supply Current (max): 60 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

37.6.11
Name:
Access:
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:
6222F–ATARM–14-Jan-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:
(
------------------------------- -
(
------------------------------------------ -
2
2
X
CRPD
×
×
PWM Channel Period Register
×
MCK
X
CPRD
CPRD
MCK
MCK
×
MCK
×
CPRD
DIVA
)
×
DIVA
)
30
22
14
)
PWM_CPRDx
6
Read/Write
or
)
(
---------------------------------------------- -
or
CRPD
(
----------------------------------------------------- -
2
×
MCK
×
CPRD
DIVAB
MCK
29
21
13
5
×
DIVB
)
)
28
20
12
4
CPRD
CPRD
CPRD
CPRD
SAM7SE512/256/32 Preliminary
27
19
11
3
26
18
10
2
25
17
9
1
24
16
8
0
553