AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 342
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AT91SAM7S256D-AU
Manufacturer Part Number
AT91SAM7S256D-AU
Description
ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
Manufacturer
Atmel
Series
SAM7S256r
Datasheet
1.AT91SAM7S256D-AU.pdf
(775 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7S256D-AU
Manufacturer:
ATMEL
Quantity:
101
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Figure 30-28. Clock Synchronization in Write Mode
Notes:
Clock Synchronization in Write Mode
TWI_RHR
TXCOMP
SVREAD
SCLWS
RXRDY
SVACC
The clock is tied low if the shift register and the TWI_RHR is full. If a STOP or REPEATED_START condition was
not detected, it is tied low until TWI_RHR is read.
Figure 30-28 on page 342
TWCK
1. At the end of the read sequence, TXCOMP is set after a STOP or after a REPEATED_START + an address different from
2. SCLWS is automatically set when the clock synchronization mechanism is started and automatically reset when the mecha-
TWD
SADR.
nism is finished.
S
SADR
As soon as a START is detected
W
describes the clock synchronization in Read mode.
A
DATA0
CLOCK is tied low by the TWI as long as RHR is full
A
DATA1
DATA0 is not read in the RHR
SCL is stretched on the last bit of DATA1
Rd DATA0
SAM7S Series [DATASHEET]
A
Rd DATA1
DATA1
DATA2
6175M–ATARM–26-Oct-12
NA
Rd DATA2
DATA2
S
ADR
342
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