SAM7S16 Atmel Corporation, SAM7S16 Datasheet - Page 669
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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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40.12.1.6
40.12.1.7
40.12.1.8
40.12.1.9
40.12.1.10
40.12.1.11
6175L–ATARM–28-Jul-11
ADC: GOVRE Bit is not Set when Reading CDR
ADC: GOVRE Bit is not Set when Disabling a Channel
ADC: OVRE Flag Behavior
ADC: EOC Set although Channel Disabled
ADC: Spurious Clear of EOC Flag
ADC: Sleep Mode
When reading CDRy (Channel Data Register y) at the same instant as an end of conversion on
channel “x” with the following conditions:
GOVRE should be set but is not.
None
When disabling channel “y” at the same instant as an end of conversion on channel “x”, EOC[x]
and DRDY being already active, GOVRE does not rise.
Note:
None
When the OVRE flag (on channel i) has been set but the related EOC status (of channel i) has
been cleared (by a read of CDRi or LCDR), reading the Status register at the same instant as an
end of conversion (causing the set of EOC status on channel i), does not lead to a reset of the
OVRE flag (on channel i) as expected.
None
If a channel is disabled while a conversion is running and if a read of CDR is performed at the
same time as an end of conversion of any channel occurs, the EOC of the channel with the con-
version running may rise (whereas it has been disabled).
Do not take into account the EOC of a disabled channel
If “x” and “y” are two successively converted channels and “z” is yet another enabled channel
(“z” being neither “x” nor “y”), reading CDR on channel “z” at the same instant as an end of con-
version on channel “y” automatically clears EOC[x] instead of EOC[z].
None.
If Sleep mode is activated while there is no activity (no conversion is being performed), it will
take effect only after a conversion occurs.
• EOC[x] already active,
• DRDY already active,
• GOVRE inactive,
• previous data stored in LCDR being neither data from channel “y”, nor data from channel “x”.
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround:
Problem Fix/Workaround
Problem Fix/Workaround
OVRE[x] rises as expected.
SAM7S Series
669
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