AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 570

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

37.5
Table 37-13. Phase Lock Loop Characteristics
Note:
37.6
Table 37-14. Master Clock Waveform Parameters
37.7
Criteria used to define the maximum frequency of the I/Os:
Table 37-15. I/O Characteristics
Symbol
F
F
F
I
Symbol
1/(t
Symbol
FreqMax
PulseminH
PulseminL
FreqMax
PulseminH
• output duty cycle (30%-70%)
• minimum output swing: 100mV to VDDIO - 100mV
• Addition of rising and falling time inferior to 75% of the period
PLL
OUT
OUT
IN
CPMCK
PLL Characteristics
Startup time depends on PLL RC filter. A calculation tool is provided by Atmel.
Master Clock Characteristics
I/O Characteristics
I01
I02
)
I01
I01
I02
Parameter
Output Frequency:
SAM7S64/32/312/161/16
Output Frequency:
SAM7S512/256/128
Input Frequency
Current Consumption
Parameter
Pin Group 1
Pin Group 1
Pin Group 1
Pin Group 2
Pin Group 2
Parameter
Master Clock Frequency
(1)
(1)
(1)
(2)
(2)
frequency
High Level Pulse Width
High Level Pulse Width
Low Level Pulse Width
frequency
Conditions
Field out of CKGR_PLL is:
Field out of CKGR_PLL is:
Active mode
Standby mode
Conditions
Conditions
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
00
10
00
10
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
Min
Min
SAM7S Series [DATASHEET]
Min
150
150
110
110
80
80
1
40
40
20
36
Typ
Max
6175M–ATARM–26-Oct-12
Max
12.5
55
4.5
25
14
Max
160
200
160
180
32
4
1
Units
MHz
MHz
MHz
MHz
Units
MHz
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
MHz
MHz
Unit
mA
µA
570