AT91SAM7S321-AU Atmel, AT91SAM7S321-AU Datasheet - Page 504

• Manufacturer Part Number: AT91SAM7S321-AU
• Description: IC ARM7 MCU FLASH 32K 64LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S321-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: 64-LQFP
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, I2S, SPI, SSC, TWI, UART, USB
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 10 bit
• Operating Supply Voltage: 1.8 V to 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, KSK-AT91SAM7S-PL, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7S-EK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Controller Family/series: AT91SAM7xxxx
• No. Of I/o's: 32
• Ram Memory Size: 8KB
• Cpu Speed: 55MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

36.4
36.4.1
Table 36-9.
36.4.2
Table 36-10. Main Oscillator Characteristics
Notes:
504
Symbol
1/(t
t
I
Symbol
1/(t
C
C
t
I
P
I
C
ST
OSC
ST
DDST
DD ON
ON
L1
L
LEXT
CPRC
CPMAIN
, C
L2
Crystal Oscillators Characteristics
1. C
2. R
3. R
4. R
5. R
)
)
AT91SAM7S Series Preliminary
RC Oscillator Characteristics
Main Oscillator Characteristics
S
S
S
S
S
is the shunt capacitance.
= 100-200 Ω; C
= 50-100 Ω; C
= 25-50 Ω; C
= 20-50 Ω; C
RC Oscillator Characteristics
Parameter
Crystal Oscillator Frequency
Internal Load Capacitance (C
Equivalent Load Capacitance
Duty Cycle
Startup Time
Standby Current Consumption
Drive level
Current dissipation
Maximum external capacitor
on XIN and XOUT
Parameter
RC Oscillator Frequency
Duty Cycle
Startup Time
Current Consumption
SHUNT
SHUNT
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
= C
L2
Conditions
V
V
After Startup Time
M
M
DDPLL
DDPLL
)
M
M
= 7 -5 fF (typ, worst case).
= 10 - 8 fF (typ, worst case).
= 2 – 1.5 fF (typ, worst case) using 1 K ohm serial resistor on xout.
= 4 - 3 fF (typ, worst case).
= 1.65V
= 1.65V
Conditions
Integrated Load Capacitance
((XIN or XOUT))
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
= 1.2 to 2V
(2)
(3)
(1)
(1)
(1)
(4)
(5)
1/(t
1/(t
1/(t
CPMAIN
CPMAIN
CPMAIN
) = 16 MHz
) = 3 MHz
) = 20 MHz
Min
22
45
Min
34
17
30
3
Typ
32
50
Typ
150
150
300
400
16
40
20
50
6175G–ATARM–22-Nov-06
Max
1.9
Max
14.5
42
55
75
250
250
450
550
1.4
20
46
23
70
15
30
50
50
10
1
1
Unit
MHz
kHz
Unit
µA
µW
µs
ms
%
pF
pF
µA
µA
pF
%