AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 72

• Manufacturer Part Number: AT90CAN128-16AE
• Description: 8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
• Manufacturer: ATMEL Corporation

Alternate Functions of Port B
72
AT90CAN128
Table 31. Overriding Signals for Alternate Functions in PA3..PA0
Note:
The Port B pins with alternate functions are shown in Table 32.
Table 32. Port B Pins Alternate Functions
The alternate pin configuration is as follows:
• OC0A/OC1C, Bit 7
OC0A, Output Compare Match A output. The PB7 pin can serve as an external output
for the Timer/Counter0 Output Compare A. The pin has to be configured as an output
(DDB7 set “one”) to serve this function. The OC0A pin is also the output pin for the PWM
mode timer function.
OC1C, Output Compare Match C output. The PB7 pin can serve as an external output
for the Timer/Counter1 Output Compare C. The pin has to be configured as an output
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
1. ADA is short for ADdress Active and represents the time when address is output. See
“External Memory Interface” on page 25 for details.
Alternate Functions
OC0A/OC1C (Output Compare and PWM Output A for Timer/Counter0 or Output
Compare and PWM Output C for Timer/Counter1)
OC1B (Output Compare and PWM Output B for Timer/Counter1)
OC1A (Output Compare and PWM Output A for Timer/Counter1)
OC2A (Output Compare and PWM Output A for Timer/Counter2 )
MISO (SPI Bus Master Input/Slave Output)
MOSI (SPI Bus Master Output/Slave Input)
SCK (SPI Bus Serial Clock)
SS (SPI Slave Select input)
PA3/AD3
SRE •
(ADA + WR)
0
SRE
WR + ADA
SRE
A3 • ADA + D3
OUTPUT • WR
0
0
0
D3 INPUT
–
PA2/AD2
SRE •
(ADA + WR)
0
SRE
WR + ADA
SRE
A2 • ADA + D2
OUTPUT • WR
0
0
0
D2 INPUT
–
PA1/AD1
SRE •
(ADA + WR)
0
SRE
WR + ADA
SRE
A1 • ADA + D1
OUTPUT • WR
0
0
0
D1 INPUT
–
PA0/AD0
SRE •
(ADA + WR)
0
SRE
WR + ADA
SRE
A0 • ADA + D0
OUTPUT • WR
0
0
0
D0 INPUT
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4250C–CAN–03/04