LC823450 Datasheet, PDF (17/55 Pages) ON Semiconductor – Low Power & High-Resolution Audio Processing System LSI

LC823450
(K) External Memory I/F
Terminal name
Multiplexed function
NCS0
GPIO06
EXTINT06
NCS1
RXD0
GPIO10
EXTINT10
NRD
GPIO17
EXTINT17
NWRENWRL
GPIO30
EXTINT30
NHBNWRH
TXD0
GPIO31
EXTINT31
NLBEXA0
GPIO16
EXTINT16
EXA[20:15]
GPIO4[5:0]
EXTINT4[5:0]
EXA[14:9]
GPIO3[F:A]
EXTINT3[F:A]
EXA[8:1]
GPIO3[9:2]
EXTINT3[9:2]
EXD[7:0]
GPIO4[D:6]
EXTINT4[D:6]
EXD[15:8]
GPIO5[5:0],
GPIO4[F:E]
EXTINT5[5:0],
EXTINT4[F:E]
Sum
Polarity
Neg
−
−
Neg
−
−
−
Neg
−
−
Neg
−
−
Neg
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Direction Function
IO
POWER
O
chip select0
B
GPIO
I
External Interrupt 0-bit6
Vdd2
O
chip select1
I
UART Ch0 receive Data
B
GPIO
Vdd2
I
External Interrupt 1-bit0
O
read enable
B
GPIO
I
External Interrupt 1-bit7
Vdd2
O
write enable, write enable low
B
GPIO
I
External Interrupt 3-bit0
Vdd2
O
high byte select, write enable high
O
UART Ch0 transmit Data
B
GPIO
Vdd2
I
External Interrupt 3-bit1
O
low byte select, address0
B
GPIO
I
External Interrupt 1-bit6
Vdd2
O
address
B
GPIO
Vdd2
I
External Interrupt 4-bit5 to bit0
O
address
B
GPIO
Vdd2
I
External Interrupt 3-bit15 to bit10
O
address
B
GPIO
Vdd2
I
External Interrupt 3-bit9 to bit2
B
Data
B
GPIO
Vdd2
I
External Interrupt 4-bit13 to bit6
B
Data
B
GPIO
Vdd2
I
External Interrupt 5-bit5 to bit0,
External Interrupt 4-bit15 to bit14
Available(○)
TA
XA, XB,
XC XD
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