SAM7S16 Atmel Corporation, SAM7S16 Datasheet - Page 686
SAM7S16
Manufacturer Part Number
SAM7S16
Description
Manufacturer
Atmel Corporation
Specifications of SAM7S16
Flash (kbytes)
16 Kbytes
Pin Count
48
Max. Operating Frequency
55 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
21
Ext Interrupts
21
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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40.14.9.2
40.14.9.3
40.14.10 Two-wire Interface (TWI)
40.14.10.1
40.14.10.2
686
SAM7S Series
SSC: Transmitter Limitations in Slave Mode
SSC: Transmitter Limitations in Slave Mode
TWI: Clock Divider
TWI: Software Reset
If TK is programmed as output and TF is programmed as input, it is impossible to emit data
when the start of edge (rising or falling) of synchro has a Start Delay equal to zero.
None.
If TK is programmed as an input and TF is programmed as an output and requested to be set to
low/high during data emission, the Frame Synchro signal is generated one bit clock period after
the data start and one data bit is lost. This problem does not exist when generating a periodic
synchro.
The data need to be delayed for one bit clock period with an external assembly.
In the following schematic, TD, TK and NRST are SAM7S signals, TXD is the delayed data to
connect to the device.
The value of CLDIV x 2
be less than or equal to 8191⋅
None.
When a software reset is performed during a frame and when TWCK is low, it is impossible to
initiate a new transfer in READ or WRITE mode.
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
CKDIV
must be less than or equal to 8191, the value of CHDIV x 2
6175L–ATARM–28-Jul-11
CKDIV
must
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