Read Sony ICD-B25 Service Manual online
ICD-B25
7
7
Pin No.
Pin Name
I/O
Pin Description
75 to 81
SEG25 to 31
O
LCD segment signal output
82 to 85
V0 to 3
—
LCD driver reference power supply pin
86
XHSTBY
I
Hardware standby signal input
87
MD2
I
Operation mode signal input 2
88
MD1
I
Operation mode signal input 1 (Connect to VCC.)
89
MD0
I
Operation mode signal input 0
90
XRESET
I
Reset signal input
91
VSS
—
Ground pin
92
XTALIN
I
Main oscillation signal input (4.096 MHz)
93
XTAL
O
Main oscillation signal output (4.096 MHz)
94
VCC
—
Power supply pin
95
WAKEUP
I
Wake up signal input
96
DSPIFREQ
I
DSP voice I/F request signal input
97
ZIFREQ
I
USB microcomputer (zephyr) I/F request signal input
98
RTCINTR
I
Real-time clock interruption request signal input
99
VBUSOFF
I
USB Vbus ON/OFF detection signal input (H=OFF)
100
HOLDSW
I
Hold switch signal input (High: HOLD)
101
XFLMCEO
O
Flash memory chip enable 0 signal output
102
XFLMRST/CE1
O
Flash memory reset signal/chip enable 1 signal output (Not used in this set.)
103 to 110
FLMIO00 to 07
I/O
Flash memory data bus
111 to 118
FLMIO08 to 15
I/O
Flash memory data bus (Not used in this set.)
119
VSS
—
Ground pin
120
XFLMWP
O
Flash memory write protect signal output
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