AT91SAM7SE256B-CU Atmel, AT91SAM7SE256B-CU Datasheet - Page 634

• Manufacturer Part Number: AT91SAM7SE256B-CU
• Description: IC ARM7 MCU FLASH 256K 144-LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE256B-CU

• 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: *
• Core: ARM7TDMI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Table 40-27. SAM7SE512/256 SMC Read Signals
Notes:
Table 40-28. SAM7SE32 SMC Read Signals
634
Symbol
SMC
SMC
SMC
SMC
SMC
SMC
SMC
SMC
SMC
SMC
Symbol
SMC
SMC
SMC
SMC
35
36
37
38
40
41
42
43
44
45
35
36
37
38
1. Early Read Protocol.
2. Standard Read Protocol.
3. n = Number of standard Wait States inserted.
4. h = Number of Hold Cycles inserted.
5. Not applicable when Address to Chip Select Setup Cycles are inserted.
SAM7SE512/256/32 Preliminary
Parameter
NRD High to NUB Change
NRD High to NLB/A0 Change
NRD High to A1-A22 Change
NRD High to Chip Select Inactive
Data Setup before NRD High
Data Hold after NRD High
Data Setup before NCS High
Data Hold after NCS High
NRD Minimum Pulse Width
NRD Minimum Pulse Width
Parameter
NRD High to NUB Change
NRD High to NLB/A0 Change
NRD High to A1-A22 Change
NRD High to Chip Select
Inactive
(1) (5)
(2) (5)
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
Conditions
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
3.3V domain
1.8V domain
Conditions
(h
(h
(2
(2
(h
(h
(h
(h
(h
(h
(n +1)
(n +1)
x
x
(h
x
x
(h
(h
x
x
x
x
x
x
(h
(h
(h
(h
(h
t
t
n +1)
n +1)
CPMCK
CPMCK
t
t
t
t
t
t
x
x
x
CPMCK
CPMCK
CPMCK
CPMCK
CPMCK
CPMCK
x
x
x
x
x
t
t
t
Min
CPMCK
CPMCK
CPMCK
t
x
t
t
t
t
CPMCK
CPMCK
CPMCK
CPMCK
CPMCK
x
t
22.2
23.2
CPMCK
x
x
Min
t
) - 1.5
) - 2.5
1
1
35
37
CPMCK
0.5
0.5
) - 2
) - 2
) - 2
) - 3
) - 3
) - 3
0
0
0
0
(3)
(3)
) - 3.5
) - 1.5
) - 1.5
) - 3
) - 2
) - 2
) - 2
) - 2
x
x
(4)
(4)
(4)
(4)
(4)
(4)
- 1.5
(4)
(4)
t
t
- 1
CPMCK
CPMCK
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(3)
(3)
-
-
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
(h
x
x
x
x
x
x
x
x
x
x
t
t
t
x
x
x
x
CPMCK
CPMCK
CPMCK
x
x
t
t
t
t
t
t
t
CPMCK
CPMCK
CPMCK
CPMCK
CPMCK
CPMCK
CPMCK
t
t
t
t
t
t
CPMCK
CPMCK
CPMCK
CPMCK
Max
CPMCK
CPMCK
Max
)+ 1.5
)+ 1.5
)+ 6.5
)+ 7
)+ 3
)+ 8
)+ 2
)+ 2
)+ 1.5
)+ 3.5
)+ 1
)+ 1
)+ 1
)+ 2
)+ 1
)+ 2
6222F–ATARM–14-Jan-11
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns