AT91SAM7SE256B-AU Atmel, AT91SAM7SE256B-AU Datasheet - Page 493
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
AT91SAM7SE256B-AU
Manufacturer Part Number
AT91SAM7SE256B-AU
Description
IC ARM7 MCU FLASH 256K 128-LQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
Specifications of AT91SAM7SE256B-AU
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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- Download datasheet (11Mb)
35.8.13
Name:
Access:
• TXRDY: Transmit Ready
0: Data has been loaded in SSC_THR and is waiting to be loaded in the Transmit Shift Register (TSR).
1: SSC_THR is empty.
• TXEMPTY: Transmit Empty
0: Data remains in SSC_THR or is currently transmitted from TSR.
1: Last data written in SSC_THR has been loaded in TSR and last data loaded in TSR has been transmitted.
• ENDTX: End of Transmission
0: The register SSC_TCR has not reached 0 since the last write in SSC_TCR or SSC_TNCR.
1: The register SSC_TCR has reached 0 since the last write in SSC_TCR or SSC_TNCR.
• TXBUFE: Transmit Buffer Empty
0: SSC_TCR or SSC_TNCR have a value other than 0.
1: Both SSC_TCR and SSC_TNCR have a value of 0.
• RXRDY: Receive Ready
0: SSC_RHR is empty.
1: Data has been received and loaded in SSC_RHR.
• OVRUN: Receive Overrun
0: No data has been loaded in SSC_RHR while previous data has not been read since the last read of the Status Register.
1: Data has been loaded in SSC_RHR while previous data has not yet been read since the last read of the Status Register.
• ENDRX: End of Reception
0: Data is written on the Receive Counter Register or Receive Next Counter Register.
1: End of PDC transfer when Receive Counter Register has arrived at zero.
6222F–ATARM–14-Jan-11
RXBUFF
31
23
15
–
–
–
7
SSC Status Register
ENDRX
30
22
14
SSC_SR
Read-only
–
–
–
6
OVRUN
29
21
13
–
–
–
5
RXRDY
28
20
12
–
–
–
4
SAM7SE512/256/32 Preliminary
TXBUFE
RXSYN
27
19
11
–
–
3
TXSYN
ENDTX
26
18
10
–
–
2
TXEMPTY
RXEN
CP1
25
17
–
9
1
TXRDY
TXEN
CP0
24
16
–
8
0
493
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