AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 581

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

Table 37-23. SSC Timings (Continued)
Notes:
Symbol
SSC
SSC
SSC
SSC
SSC
SSC
SSC
7
8
9
10
11
12
13
(1)
1. Timings SSC4 and SSC7 depend on the start condition. When STTDLY = 0 (Receive start delay) and START = 4, or 5 or 7
2. For output signals (TF, TD, RF), Min and Max access times are defined. The Min access time is the time between the TK (or
3. 3.3V domain: V
4. 1.8V domain: V
5. t
Figure 37-16. Min and Max access time of output signals
(Receive Start Selection), two Periods of the MCK must be added to timings.
RK) edge and the signal change. The Max access timing is the time between the TK edge and the signal stabilization.
37-16
Parameter
TK edge to TF/TD (TK input, TF input)
RF/RD setup time before RK edge (RK input)
RF/RD hold time after RK edge (RK input)
RK edge to RF (RK input)
RF/RD setup time before RK edge (RK output)
RF/RD hold time after RK edge (RK output)
RK edge to RF (RK output)
CPMCK
illustrates Min and Max accesses for SSC0. The same applies for SSC1, SSC4, and SSC7, SSC10 and SSC13.
: Master Clock period in ns
VDDIO
VDDIO
from 3.0V to 3.6V, maximum external capacitor = 40 pF.
from 1.65V to 1.95V, maximum external capacitor = 20 pF.
TK (CKI =1)
TK (CKI =0)
TF/TD
Receiver
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
SSC
SSC
0max
0min
10 (+3*t
6 (+3*t
56.5 - t
t
26 - t
t
CPMCK
CPMCK
t
t
10.5
CPMCK
CPMCK
Min
CPMCK
6
0
0
CPMCK
0
0
(2)
CPMCK
(2)
(2)
CPMCK
- 5.5
SAM7S Series [DATASHEET]
(2)
- 10
)
)
(1)(2)
(1)(2)
29.5 (+3*t
56 (+3*t
6175M–ATARM–26-Oct-12
Max
27
58
12
4
CPMCK
(2)
CPMCK
(2)
(2)
(2)
)
(1)(2)
)
(1)(2)
Units
Figure
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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