AT91SAM7X256B-AU Atmel, AT91SAM7X256B-AU Datasheet - Page 373

IC MCU 256KB FLASH 100LQFP

AT91SAM7X256B-AU

Manufacturer Part Number
AT91SAM7X256B-AU
Description
IC MCU 256KB FLASH 100LQFP
Manufacturer
Atmel
Series
AT91SAMr

Specifications of AT91SAM7X256B-AU

Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
CAN, Ethernet, I²C, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
62
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
64K 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
100-LQFP
Package
100LQFP
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
55 MHz
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Number Of Programmable I/os
62
Interface Type
CAN/Ethernet/SPI/I2S/TWI/USART/USB
On-chip Adc
8-chx10-bit
Number Of Timers
3
Controller Family/series
AT91SAM7xxxxx
No. Of I/o's
62
Ram Memory Size
64KB
Cpu Speed
55MHz
No. Of Timers
1
Rohs Compliant
Yes
Cpu Family
91S
Device Core Size
32b
Frequency (max)
55MHz
Total Internal Ram Size
64KB
# I/os (max)
62
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
1.8/3.3V
Operating Supply Voltage (max)
1.95/3.6V
Operating Supply Voltage (min)
1.65/3V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
100
Package Type
LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Compliant

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31.8.5
Name:
Access Type:
• CKS: Transmit Clock Selection
• CKO: Transmit Clock Output Mode Selection
• CKI: Transmit Clock Inversion
0: The data outputs (Data and Frame Sync signals) are shifted out on Transmit Clock falling edge. The Frame sync signal
input is sampled on Transmit clock rising edge.
1: The data outputs (Data and Frame Sync signals) are shifted out on Transmit Clock rising edge. The Frame sync signal
input is sampled on Transmit clock falling edge.
CKI affects only the Transmit Clock and not the output clock signal.
6120H–ATARM–17-Feb-09
31
23
15
7
0x3-0x7
CKS
CKO
SSC Transmit Clock Mode Register
0x0
0x1
0x2
0x3
0x0
0x1
0x2
CKG
30
22
14
SSC_TCMR
Read-write
6
Selected Transmit Clock
Divided Clock
RK Clock signal
TK Pin
Reserved
Transmit Clock Output Mode
None
Continuous Transmit Clock
Transmit Clock only during data transfers
Reserved
CKI
29
21
13
5
AT91SAM7X512/256/128 Preliminary
28
20
12
4
PERIOD
STTDLY
CKO
27
19
11
3
26
18
10
2
START
25
17
9
1
Input-only
CKS
TK pin
Output
Output
24
16
8
0
373

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