Filter
Top Products
207
5.4 Using External Pins as I/O Ports
4 PB5 PB5/DREQ2 DSCR (C1LE)
0: PB5
1: CS1L
Pin values are always input to
DESQ2.
CS1L
DREQ2
5 PB6 PB6 DSCR (C1HE bit) and DATCR
(AKSE2, AKDE2 bits)
C1HE, AKSE2, AKDE2 000: PB6
100: CS1H
Other: DACK2
CS1H
DACK2
6 PB7 PB7 DSCR(DW1E)
0: PB7
1: DW1X
DW1X
19 to 21 MD0 to MD2 MD0 to MD2 -
15 NMIX NMIX -
75 to 78 AN0 to AN3 AN0 to AN3 AIC (AI0 to AI3 bits)
0: AN0 to AN3
1: setting not possible
98 to 97 PE0 to PE1 PE0/INT0 to PE1/
INT1
Pin values are always input to INT0 to
INT1.
INT0 to INT1
Table 5.4-2 External Bus Functions to be Selected (2/4)
Pin No. Pin code Initial value Switch-over register
Table 5.4-3 External Bus Functions to be Selected (3/4)
Pin No. Pin code Initial value Switch-over register
92 to 91 PE2 to PE3 PE2/INT2 to PE3/
INT3
SMR (SCKE)
0: pin values are input to SC1 and
SC2.
1: SC1 and SC2 (output)
INT2 to INT3
SC1 to SC2
90 to 89 PE4 to PE5 PE4/DREQ0 to PE5/
DREQ1
Pin values are always input to DREQ0
and DREQ1.
DREQ0, DREQ1
88 to 87 PE6 to PE7 PE6 to PE7 DATCR (AKSE0/1, AKDE0/1)
0: PE6, PE7
1: DACK0, DACK1
DACK0, DACK1
79 PF0 PF0/SI0/TRG0 Pin values are always input to SI0 and
TRG0 (during operation).
TRG0
SI0
80 PF1 PF1/TRG1 SMR (SOE)
0: PF1
1: SO0 (output)
Pin values are always input to TRG1
(during operation).
TRG1
SO0