SAM7X256 Atmel Corporation, SAM7X256 Datasheet - Page 616

no-image

SAM7X256

Manufacturer Part Number
SAM7X256
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM7X256

Flash (kbytes)
256 Kbytes
Pin Count
100
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
62
Ext Interrupts
62
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
3
Can
1
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
64
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
38.4.3
Table 38-10. Crystal Characteristics
38.4.4
Table 38-11. XIN Clock Electrical Characteristics
Note:
616
Symbol
ESR
C
C
Symbol
1/(t
t
t
t
t
t
C
R
V
V
I
CPXIN
CHXIN
CLXIN
CLCH
CHCL
DDBP
XIN_IL
XIN_IH
M
SHUNT
IN
IN
CPXIN
1. These characteristics apply only when the Main Oscillator is in bypass mode (i.e., when MOSCEN = 0 and OSCBYPASS = 1
)
SAM7X512/256/128
Crystal Characteristics
XIN Clock Characteristics
in the CKGR_MOR register, see the Clock Generator Main Oscillator Register.
Parameter
Equivalent Series Resistor Rs
Motional capacitance
Shunt capacitance
Parameter
XIN Clock Frequency
XIN Clock Period
XIN Clock High Half-period
XIN Clock Low Half-period
Rise Time
Fall Time
XIN Input Capacitance
XIN Pull-down Resistor
V
V
Bypass Current Consumption
XIN
XIN
Input Low-level Voltage
Input High-level Voltage
Figure 38-2. XIN CLock Timing
V
XIN_IL
V
XIN_IH
t
CPXIN
Conditions
Fundamental @3 MHz
Fundamental @8 MHz
Fundamental @16 MHz
Fundamental @20 MHz
Conditions
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
t
CPXIN
0.8 x V
Min
t
CLCH
20.0
Min
-0.3
8.0
8.0
DDPLL
t
CPXIN
Typ
t
CHXIN
0.2 x V
Max
50.0
1.95
400
400
500
46
15
6120I–ATARM–06-Apr-11
DDPLL
Max
200
100
80
50
8
7
t
CHCL
µΩ/MHz
Units
MHz
Unit
pF
ns
ns
ns
pF
V
V
fF
Ω

Related parts for SAM7X256