SAM7S256 Atmel Corporation, SAM7S256 Datasheet - Page 200

• Manufacturer Part Number: SAM7S256
• Manufacturer: Atmel Corporation

Specifications of SAM7S256

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Ssc: 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: 1.8/3.3
• 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

AC and DC Parameters
7.24
7-28
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
abe
abth
abts
abz
addr
ah
ald
ale
aleh
ape
apeh
aph
aps
bcems
bld
blh
brkh
Notes on AC Parameters
Address bus enable time
ABORT hold time from MCLKf
ABORT set up time to MCLKf
Address bus disable time
MCLKr to address valid
Address hold time from MCLKr
Address group latch time
Address group latch open output delay
Address group latch output hold time
MCLKf to address group valid
Address group output hold time from MCLKf
APE hold time from MCLKf
APE set up time to MCLKr
BREAKPT to nCPI, nEXEC, nMREQ, SEQ delay
MCLKr to MAS[1:0] and LOCK
MAS[1:0] and LOCK hold from MCLKr
Hold time of BREAKPT from MCLKr
Parameter
Table 7-23 lists the AC timing parameters in alphabetical order.
Contact your supplier for AC timing parameter values.
In Table 7-23:
•
•
the letter f at the end of a signal name indicates the falling edge
the letter r at the end of a signal name indicates the rising edge.
Copyright © 1994-2001. All rights reserved.
Table 7-23 AC timing parameters used in this chapter
Parameter
Type
Maximum
Minimum
Minimum
Maximum
Maximum
Minimum
Maximum
Maximum
Minimum
Maximum
Minimum
Minimum
Minimum
Maximum
Maximum
Minimum
Minimum
ARM DDI 0029G
Figure
cross
reference
Figure 7-2
Figure 7-11
Figure 7-11
Figure 7-2
Figure 7-1
Figure 7-17
Figure 7-1
Figure 7-22
Figure 7-22
Figure 7-22
Figure 7-23
Figure 7-23
Figure 7-23
Figure 7-23
Figure 7-13
Figure 7-1
Figure 7-1
Figure 7-13