bd8918fv ROHM Co. Ltd., bd8918fv Datasheet - Page 3

• Manufacturer Part Number: bd8918fv
• Description: Ic Card Interface Ics With Built-in Low Noise Ldo Regulator
• Manufacturer: ROHM Co. Ltd.

●Block Diagram
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BD8918F,BD8918FV,BD8919F,BD8919FV
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CMDVCCB
22pF
22 pF
IO_U
CLKSEL
OFFB
RSTIN
F
220Ω
GND
XTAL 2
XTAL1
VDD
VDD
50k
50k
2.7V-5.5V
VDD
50k
20k
VDET
LVS
VIREF
OSC
MAX 1MHz
CLK
DIV
XT
0.1uF
ALARM
POWER _ON
DIVEN
DIVCLK
BD8918F/FV
BD8919F/FV
VDD
TSD
SEQUENCER
11k
ALARM
TSD
Fig. 2
3/15
VREF
F=8MHz
F=16MHz
RSTEN
VCCEN
CLKEN
IO TRANS
ALARM
VCC
VDD
VDDP
RST BUF
CLK BUF
4.75V-5.5V
LDO
VDD
10µF
50k
VCC
11k
CGND
Technical Note
VCC
2010.4 - Rev.D
IO_C
PRES
RST
CLK
1µF
5V