ATmega8515 Atmel Corporation, ATmega8515 Datasheet - Page 51

no-image

ATmega8515

Manufacturer Part Number
ATmega8515
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega8515

Flash (kbytes)
8 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
35
Ext Interrupts
3
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
3
Input Capture Channels
1
Pwm Channels
3
32khz Rtc
No
Calibrated Rc Oscillator
Yes

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA8515
Manufacturer:
ATMEL
Quantity:
5 510
Part Number:
ATMEGA8515
Manufacturer:
NS
Quantity:
5 510
Part Number:
ATMEGA8515
Manufacturer:
AT
Quantity:
20 000
Part Number:
ATmega8515-16AC
Manufacturer:
MOT
Quantity:
3 450
Part Number:
ATmega8515-16AC
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega8515-16AC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega8515-16AI
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega8515-16AI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega8515-16AJ
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega8515-16AU
Manufacturer:
ATMEL
Quantity:
4 500
Part Number:
ATmega8515-16AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega8515-16AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega8515-16AUR
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATmega8515-16JU
Quantity:
1 831
Part Number:
ATmega8515-16PU
Manufacturer:
AT
Quantity:
20 000
Watchdog Timer Control
Register – WDTCR
2512K–AVR–01/10
Table 20. WDT Configuration as a Function of the Fuse Settings of S8515C and
WDTON.
Figure 28. Watchdog Timer
• Bits 7..5 – Res: Reserved Bits
These bits are reserved bits in the ATmega8515 and will always read as zero.
• Bit 4 – WDCE: Watchdog Change Enable
This bit must be set when the WDE bit is written to logic zero. Otherwise, the Watchdog
will not be disabled. Once written to one, hardware will clear this bit after four clock
cycles. Refer to the description of the WDE bit for a Watchdog disable procedure. In
Safety Levels 1 and 2, this bit must also be set when changing the prescaler bits. See
“Timed Sequences for Changing the Configuration of the Watchdog Timer” on page 53.
• Bit 3 – WDE: Watchdog Enable
When the WDE is written to logic one, the Watchdog Timer is enabled, and if the WDE is
written to logic zero, the Watchdog Timer function is disabled. WDE can only be cleared
if the WDCE bit has logic level one. To disable an enabled Watchdog Timer, the follow-
ing procedure must be followed:
Bit
Read/Write
Initial Value
S8515C
Unprogrammed
Unprogrammed
Programmed
Programmed
R
7
0
WDTON
Unprogrammed
Programmed
Unprogrammed
Programmed
R
OSCILLATOR
6
0
WATCHDOG
R
5
0
Safety
Level
1
2
0
2
WDCE
R/W
4
0
WDT
Initial
State
Disabled
Enabled
Disabled
Enabled
WDE
R/W
3
0
How to Disable
the WDT
Timed sequence
Always enabled
Timed sequence
Always enabled
WDP2
R/W
2
0
ATmega8515(L)
WDP1
R/W
1
0
WDP0
R/W
How to
Change Time-
out
Timed
sequence
Timed
sequence
No restriction
Timed
sequence
0
0
WDTCR
51

Related parts for ATmega8515