Rainbow Electronics ATtiny43U - Manual (Page 72)

72
8048B–AVR–03/09
ATtiny43U
Table 11-4 on page 72 to Table 11-6 on page 73 relate the alternate functions of Port A to the
overriding signals shown in Figure 11-5 on page 68 .
Table 11-5. Overriding Signals for Alternate Functions in PA5..PA4
Table 11-4. Overriding Signals for Alternate Functions in PA7..PA6
Signal
Name
PA7/RESET/ dW/ PCINT7 PA6/ PCINT6
PUOE RSTDISBL (1) + MONCOM_ENABLE
1. RSTDISBL is 1 when the Fuse is “0” (Programmed).
EXT_CLK (2)
2. EXT_CLOCK = external clock is selected as system clock
PUOV 1 0
DDOE RSTDISBL (1) + MONCOM_ENABLE EXT_CLK (2)
DDOV
MONCOM_ENABLE • debugWire
Transmit
0
PVOE RSTDISBL (1) + MONCOM_ENABLE EXT_CLK (2)
PVOV 0 0
PTOE 0 0
DIEOE
RSTDISBL (1) + MONCOM_ENABLE +
PCINT7 • PCIE0
EXT_CLK (2) + (PCINT6 • PCIE0)
DIEOV
MONCOM_ENABLE +
MONCOM_ENABLE • RSTDISBL
(1) •
PCINT7 • PCIE0)
(EXT_CLK (2) • PWR_DOWN) +
(EXT_CLK (2) • PCINT7 • PCIE0)
DI dW/PCINT7 Input CLKI/PCINT6 Input
AIO
Signal
Name
PA5/AIN1/ PCINT5 PA4/AIN0/PCINT4
PUOE 0 0
PUOV 0 0
DDOE 0 0
DDOV 0 0
PVOE 0 0
PVOV 0 0
PTOE 0 0
DIEOE (PCINT5 • PCIE) + AIN1D (PCINT4 • PCIE0) + AIN0D
DIEOV PCINT5 • PCIE0 PCINT4 • PCIE0
DI PCINT5 Input PCINT4 input
AIO Analog Comparator Negative Input Analog Comparator Positive Input