AT91SAM7SE256B-AUR Atmel, AT91SAM7SE256B-AUR Datasheet - Page 628

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

Specifications of AT91SAM7SE256B-AUR

• 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

40.8
40.8.1
Table 40-20. Master Clock Waveform Parameters
40.8.2
Criteria used to define the maximum frequency of the I/Os:
Table 40-21. I/O Characteristics
Notes:
628
Symbol
1/(t
1/(t
Symbol
FreqMax
PulseminH
PulseminL
FreqMax
PulseminH
PulseminL
FreqMax
PulseminH
PulseminL
• output duty cycle (30%-70%)
• minimum output swing: 100mV to VDDIO - 100mV
• Addition of rising and falling time inferior to 75% of the period
CPMCK
CPMCK
AC Characteristics
1. Pin Group 1 = SDCK
2. Pin Group 2 = PA4 to PA31, PB0 to PB31 and PC0-PC23
I01
I02
I03
)
)
SAM7SE512/256/32 Preliminary
Master Clock Characteristics
I/O Characteristics
I01
I02
I03
I01
I02
I03
Parameter
Pin Group 1
Pin Group 1
Pin Group 1
Pin Group 2
Pin Group 2
Pin Group 2
Pin Group 3
Pin Group 3
Pin Group 3
Parameter
Master Clock Frequency
Master Clock Frequency
For more information on data converter terminology, please refer to the application note:
Converter Terminology, Atmel lit° 6022.
(1)
(1)
(1)
(2)
(2)
(2)
(3)
(3)
(3)
frequency
frequency
frequency
High Level Pulse Width
High Level Pulse Width
Low Level Pulse Width
Low Level Pulse Width
High Level Pulse Width
Low Level Pulse Width
Conditions
V
V
DDCORE
DDCORE
Load: 30 pF
Load: 30 pF
Load: 30 pF
Load: 30 pF
Load: 30 pF
Load: 30 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Load: 40 pF
Conditions
= 1.8V
= 1.65V
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
(4)
(5)
16.6
16.6
Min
20
40
20
40
20
31
20
31
31
31
Min
Max
48.2
25
25
16
30
20
Max
55
48
6222F–ATARM–14-Jan-11
Units
MHz
MHz
MHz
MHz
MHz
MHz
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Data