ATMEGA8515-16AC Atmel, ATMEGA8515-16AC Datasheet - Page 66
![IC AVR MCU 8K 16MHZ COM 44-TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA8515-16AC
Manufacturer Part Number
ATMEGA8515-16AC
Description
IC AVR MCU 8K 16MHZ COM 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8515-16AC
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA8515-16AC
Manufacturer:
MOT
Quantity:
3 450
Part Number:
ATMEGA8515-16AC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Special Function IO Register –
SFIOR
Alternate Functions of Port A
66
ATmega8515(L)
• Bit 2 – PUD: Pull-up Disable
When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn
and PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01).
See “Configuring the Pin” on page 60 for more details about this feature.
Port A has an alternate function as the address low byte and data lines for the External
Memory Interface.
Table 26. Port A Pins Alternate Functions
Table 27 and Table 28 relate the alternate functions of Port A to the overriding signals
shown in Figure 33 on page 64.
Table 27. Overriding Signals for Alternate Functions in PA7..PA4
Note:
Bit
Read/Write
Initial Value
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Port Pin
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
1. ADA is short for ADdress Active and represents the time when address is output. See
“External Memory Interface” on page 25.
PA7/AD7
SRE
~(WR | ADA
PortA7
SRE
WR | ADA
SRE
A7 • ADA |
D7 OUTPUT • WR
0
0
D7 INPUT
–
R/W
7
–
0
Alternate Function
AD7 (External memory interface address and data bit 7)
AD6 (External memory interface address and data bit 6)
AD5 (External memory interface address and data bit 5)
AD4 (External memory interface address and data bit 4)
AD3 (External memory interface address and data bit 3)
AD2 (External memory interface address and data bit 2)
AD1 (External memory interface address and data bit 1)
AD0 (External memory interface address and data bit 0)
XMBK
R/W
(1)
6
0
) •
XMM2
R/W
PA6/AD6
SRE
~(WR | ADA) •
PortA6
SRE
WR | ADA
SRE
A6 • ADA |
D6 OUTPUT •
WR
0
0
D6 INPUT
–
5
0
XMM1
R/W
4
0
XMM0
R/W
3
0
PA5/AD5
SRE
~(WR | ADA) •
PortA5
SRE
WR | ADA
SRE
A5 • ADA |
D5 OUTPUT •
WR
0
0
D5 INPUT
–
PUD
R/W
2
0
R/W
1
–
0
PA4/AD4
~(WR | ADA) •
PortA4
SRE
WR | ADA
A4 • ADA |
D4 OUTPUT •
WR
0
0
D4 INPUT
–
SRE
SRE
PSR10
R/W
2512K–AVR–01/10
0
0
SFIOR
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