ATMEGA8515L8AU

Manufacturer Part NumberATMEGA8515L8AU
DescriptionTQFP44
ManufacturerATMEL Corporation
ATMEGA8515L8AU datasheet
 

Specifications of ATMEGA8515L8AU

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Page 74/257

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Alternate Functions of Port E
ATmega8515(L)
74
The Port E pins with alternate functions are shown in Table 38.
Table 38. Port E Pins Alternate Functions
Port Pin
Alternate Function
PE2
OC1B (Timer/Counter1 Output Compare B Match Output)
PE1
ALE (Address Latch Enable to External Memory)
ICP (Timer/Counter1 Input Capture Pin)
PE0
INT2 (External Interrupt 2 Input)
The alternate pin configuration is as follows:
• OC1B – Port E, Bit 2
OC1B, Output Compare Match B output: The PE2 pin can serve as an external output
for the Timer/Counter1 Output Compare B. The pin has to be configured as an output
(DDE2 set (one)) to serve this function. The OC1B pin is also the output pin for the PWM
mode timer function.
• ALE – Port E, Bit 1
ALE is the external Data memory Address Latch Enable signal.
• ICP/INT2 – Port E, Bit 0
ICP – Input Capture Pin: The PE0 pin can act as an Input Capture pin for
Timer/Counter1.
INT2, External Interrupt Source 2: The PE0 pin can serve as an external interrupt
source.
Table 39 relate the alternate functions of Port E to the overriding signals shown in Figure
33 on page 64.
Table 39. Overriding Signals for Alternate Functions PE2..PE0
Signal Name
PE2
PUOE
0
PUOV
0
DDOE
0
DDOV
0
PVOE
OC1B OVERRIDE ENABLE
PVOV
OC1B
DIEOE
0
DIEOV
0
DI
0
AIO
PE1
PE0
SRE
0
0
0
SRE
0
1
0
SRE
0
ALE
0
0
INT2 ENABLED
0
1
0
INT2 INPUT, ICP INPUT
2512J–AVR–10/06