AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 46

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Table 10-4.
46
Write
Access
tw
tw
tw
tw
tw
tw
tw
tw
tw
tw
ADSWL
WPL1
WPL2
DSWH1
DSWH2
ADHWH
OEHDD
CSHDD
DHWH1
DHWH2
AT91SAM7A1
Description
Address/NCS/NUB/NLB setup time
to write low
Write pulse low (one or more wait
states)
Write pulse low (0 wait state)
Data setup time to write high (one or
more wait states)
Data setup time to write high (0 Wait
State)
Address/CS/NUB/NLB hold time
from write high
Output enable high (previous is a
read cycle) to data drive
Chip select high (previous is a read
cycle) to data drive
Data hold time from write high (one
or more wait states)
Data hold time from write high (0 wait
state)
Timings for Write Access
0.5 * t
0.5 * t
0.5 * t
0.5 * t
1.5 * t
0.5 * t
(1 + NWS) *
(1 + NWS) *
t
t
t
CYCLE
CYCLE
CYCLE
2.0ns
1.6ns
2.1ns
3.6ns
4.1ns
2.6ns
5.7ns
4.3ns
3.8ns
4.1ns
Min
CYCLE
CYCLE
CYCLE
CYCLE
CYCLE
CYCLE
Load = 15pf
-
-
-
-
-
-
-
-
-
Max
0.5 * t
0.5 * t
0.5 * t
0.5 * t
1.5 * t
0.5 * t
(1 + NWS) *
(1 + NWS) *
t
t
t
CYCLE
CYCLE
CYCLE
2.0ns
1.6ns
2.1ns
5.5ns
6.0ns
7.5ns
6.2ns
5.6ns
5.9ns
3.3ns
Min
CYCLE
CYCLE
CYCLE
CYCLE
CYCLE
CYCLE
Load = 40pf
-
-
-
-
-
-
-
-
-
Max
0.5 * t
0.5 * t
0.5 * t
0.5 * t
1.5 * t
0.5 * t
(1 + NWS) *
(1 + NWS) *
t
t
t
CYCLE
CYCLE
CYCLE
2.0ns
1.7ns
2.2ns
7.0ns
7.5ns
3.9ns
8.9ns
7.6ns
7.0ns
7.4ns
Min
6048B–ATARM–29-Jun-06
CYCLE
CYCLE
CYCLE
CYCLE
CYCLE
CYCLE
Load = 60pf
-
-
-
-
-
-
-
-
-
Max