ML674000
Oki Semiconductor
Pin Number
LFBG
Primary Function
Function
Secondary Function
Pin Name I/O Function
TQFP
Pin Name I/O
A
GN
D
76
H12
GND_IO
I/O ground
—
—
77
78
79
80
81
H10
H11
G12
G10
G11
VDD_IO VDD I/O power supply
—
—
—
—
—
—
—
—
—
—
XA[9]
XA[10]
XA[11]
XA[12]
O
O
O
O
External address output
External address output
External address output
External address output
GN
D
82
G13 GND_CORE
Core ground
—
—
83
84
85
86
87
88
F11 VDD_CORE VDD Core power supply
—
—
—
—
—
—
—
—
—
—
—
—
F10
F12
E12
F13
E10
XA[13]
XA[14]
XA[15]
XA[16]
XA[17]
O
O
O
O
O
External address output
External address output
External address output
External address output
External address output
GN
D
89
90
91
D12
E13
E11
GND_IO
XA[18]
I/O ground
—
—
—
—
O
O
External address output
General-purpose port (with interrupt
function)
PIOA[10]
I/O
XA[19]
External address output
General-purpose port (with interrupt
function)
92
D11
PIOA[11]
PIOA[12]
I/O
I/O
XA[20]
O
External address output
External address output
General-purpose port (with interrupt
function)
93
94
95
D13
C12
D10
XA[21]
—
O
—
O
VDD_IO VDD I/O power supply
General-purpose port (with interrupt
function)
PIOA[13]
PIOA[14]
PIOA[15]
I/O
I/O
I/O
XA[22]
External address output
External address output
General-purpose port (with interrupt
function)
96
97
B12
A12
XA[23]
XWR
O
O
General-purpose port (with interrupt
function)
External bus data transfer
direction
98
99
A11
C10
XOE_N
XWE_N
O
O
Output enable (except SDRAM)
Write enable
—
—
—
—
GN
D
100 B11
GND_IO
I/O ground
—
—
101 A10 XBWE_N[0]
102 C9 XBWE_N[1]
103 B10 XROMCS_N
O
O
O
O
O
O
Write enable (LSB)
Write enable (MSB)
—
—
—
—
—
—
—
—
—
—
External ROM chip select
External RAM chip select
I/O bank 0 chip select
I/O bank 1 chip select
104
105
106
A9 XRAMCS_N
D9 XIOCS_N[0]
B9 XIOCS_N[1]
GN
D
107
108
109
A8 GND_CORE
Core ground
—
—
—
—
I
B8 VDD_CORE VDD Core power supply
General-purpose port (with interrupt
function)
D8
PIOB[0]
PIOB[1]
I/O
I/O
DREQ0
DMA request signal (Ch 0)
DREQ clear signal (Ch 0)
General-purpose port (with interrupt
function)
110
111
C8
B7
DREQCLR0
—
O
VDD_IO VDD I/O power supply
—
8/22
OKI [ OKI ELECTRONIC COMPONETS ]
