AT91SAM7SE256B-CUR Atmel, AT91SAM7SE256B-CUR Datasheet - Page 622

• 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

40.4.2
Table 40-10. Main Oscillator Characteristics
Notes:
622
Symbol
1/(t
C
C
C
C
t
I
P
I
C
ST
DDST
DD ON
ON
L1
L1
L
L
LEXT
(6)
(6)
CPMAIN
, C
, C
(6)
L2
L2
1. C
2. R
3. R
4. R
5. R
6. C
)
SAM7SE512/256/32 Preliminary
Main Oscillator Characteristics
S
S
S
S
S
L
and C
is the shunt capacitance.
= 100-200 Ω; C
= 50-100 Ω;
= 25-50 Ω; C
= 20-50 Ω; C
Parameter
Crystal Oscillator Frequency
SAM7SE512/256
Internal Load Capacitance (C
SAM7SE32
Internal Load Capacitance (C
SAM7SE512/256
Equivalent Load Capacitance
SAM7SE32
Equivalent Load Capacitance
Duty Cycle
Startup Time
Standby Current Consumption
Drive level
Current dissipation
Maximum external capacitor
on XIN and XOUT
LEXT
∅
SHUNT
SHUNT
C
SHUNT
SHUNT
= 2.5 - 3.0 pF; C
= 3.2 - 4.0 pF; C
= 2.0 - 2.5 pF; C
= 2.0 - 2.5 pF; C
L1
L1
= C
= C
C
XIN
LEXT
L2
L2
M
M
)
)
= 7 -5 fF (typ, worst case).
= 10 - 8 fF (typ, worst case).
M
M
= 2 – 1.5 fF (typ, worst case) using 1 K ohm serial resistor on xout.
= 4 - 3 fF (typ, worst case).
Conditions
Integrated Load Capacitance
((XIN or XOUT))
Integrated Load Capacitance
(XIN or XOUT)
Integrated Load Capacitance
(XIN and XOUT in series)
Integrated Load Capacitance
(XIN and XOUT in series)
V
C
C
C
Standby mode
@3 MHz
@8 MHz
@16 MHz
@20 MHz
@3 MHz
@8 MHz
@16 MHz
@20 MHz
DDPLL
S
S
S
= 3 pF
= 7 pF
= 7 pF
AT91SAM7SE
= 1.2 to 2V
(2)
(3)
(1)
(1)
(1)
(4)
(5)
C
1/(t
1/(t
1/(t
L
CPMAIN
CPMAIN
CPMAIN
) = 16 MHz
C
) = 3 MHz
) = 20 MHz
XOUT
LEXT
Min
34
18
17
30
3
9
Typ
150
150
300
400
16
40
22
20
11
50
6222F–ATARM–14-Jan-11
Max
14.5
250
250
450
550
1.4
20
46
26
23
13
70
15
30
50
50
10
1
1
MHz
Unit
µW
ms
pF
pF
pF
pF
µA
µA
pF
%