IC Card Interface ICs
IC card interface ICs
with Built-in DC / DC Converter
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV, BD8907F
No.09056EAT02
●Overview
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV and BD8907F are an interface IC for a 3V or 5V smart card.
It works as a bidirectional signal buffer between a smart card and a controller. Also, it supplies 3V or 5V power to a smart
card. With electrostatic breakdown voltage of more than HBM: ±6000V, it protects the card contact pins.
●Features
1) 3 half duplex bidirectional buffers
2) Protection against short-circuit for all the card contact pins
3) Card power source (VREG) of 3V or 5V
4) Overcurrent protection for card power source
5) Built-in thermal shutdown circuit
6) Built-in supply voltage detector
7) Automatic start-up/shutdown sequence function for card contact pin
Start-up sequence: driven by a signal from controller (CMDVCCB↓)
Shutdown sequence: driven by a signal from controller (CMDVCCB↑) and fault detection (card removal,
short circuit of card power, IC overheat detection, VDD or VDDP drop)
8) Card contact pin ESD voltage
≧
±6000V
9) 2MHz - 26MHz integrated crystal oscillator
10) Programmable for clock division of output signal by 1, 1/2, 1/4, and 1/8
11) RST output control by RSTIN input signal (positive output)
12) One multiplexed card status output by OFFB signal
●Line
up matrix
Part No.
BD8904F
BD8904FV
BD8905F
BD8906F
BD8906FV
BD8907F
Resistor to set VDD
voltage detector
External
External
External
Built-in
Built-in
Built-in
Input Voltage
VDD
2.7V - 5.5V
2.7V - 5.5V
2.7V - 5.5V
3.0V - 5.5V
3.0V - 5.5V
3.0V - 5.5V
VDDP
3.0V - 5.5V
3.0V - 5.5V
3.0V - 5.5V
3.0V - 5.5V
3.0V - 5.5V
3.0V - 5.5V
Operating
temperature
-40°C - +85°C
-40°C - +85°C
-25°C - +85°C
-25°C - +85°C
-25°C - +85°C
-40°C - +85°C
Package
SOP28
SSOP-B28
SOP28
SOP28
SSOP-B28
SOP28
●Application
Interface for smart cards
Interface for B-CAS cards
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/15
2009.07 - Rev.A
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV, BD8907F
●Absolute
maximum ratings (Ta=25°C)
Parameter
VDD Input Voltage
VDDP Input Voltage
I/O Pin Voltage
Card Contact Pin Voltage
Charge Pump Pin Voltage
Junction Temperature
Storage Temperature
BD8904F
BD8905F
BD8906F
Power
Dissipation BD8907F
BD8904FV
BD8906FV
Symbol
V
DD
V
DDP
V
IN
V
OUT
V
REG
V
n
T
jmax
T
stg
Rating
-0.3 - 6.5
-0.3 - 6.5
-0.3 - +6.5
-0.3 - +6.5
-0.3 - +14.0
+150
-55 - +150
750
P
tot
1060
mW
Unit
V
V
V
V
V
°C
°C
Note
Technical Note
Pin : XTAL1, XTAL2, VSEL, RSTIN, AUX1C, AUX2C, IOC,
CLKDIV1, CLKDIV2, CMDVCCB, OFFB, PORADJ, S2
Pin : PRES, PRESB, CLK, RST, IO, AUX1, AUX2
Pin : VCH, S1
Ta=-40 - +85°C
Ta=-25 - +85°C
Ta=-25 - +85°C
Ta=-40 - +85°C
Ta=-40 - +85°C
Ta=-25 - +85°C
* Refer to the following package power
dissipation
•This
product is not designed to be radiation tolerant.
•Absolute
maximum ratings are not meant for guarantee of operation.
●Operating
Conditions
Parameter
Operating temperature
VDD Input Voltage
Symbol
T
opr
V
DD
Limits
MIN TYP
-40
-
-25
-
2.7
-
3.0
-
4.5
5.0
3.0
-
3.1
-
3.0
-
3.0
5.0
MAX
+85
+85
5.5
5.5
5.5
4.5
4.5
3.1
5.5
Unit
°C
°C
V
V
V
V
V
V
V
Note
BD8904F, BD8904FV, BD8907F
BD8905F,BD8906F, BD8906FV
BD8904F, BD8904FV, BD8905F
BD8906F,BD8906FV, BD8907F
VREG=5V; Ivreg
≤
60mA
VREG=5V; Ivreg
≤
20mA, Except BD8904FV
VREG=5V; Ivreg
≤
25mA, Application to BD8904FV
VREG=5V; Ivreg
≤
20mA, Application to BD8904FV
VREG=3V; Ivreg
≤
60mA
VDDP Input Voltage
V
DDP
●Package
Power Dissipation
The power dissipation of the package will be as follows in case that ROHM standard PCB is used.
Use of this device beyond the following the power dissipation may cause permanent damage.
BD8904F, BD8905F, BD8906F, BD8907F: Pd=750mW;
BD8904FV, BD8906FV
: Pd=1060mW;
however, reduce 6mW per 1°C when used Ta≥25°C.
however, reduce
8.5mW per 1°C when used Ta≥25°C.
3
ROHM standard PCB: Size: 70×70×1.6 (mm ), Material: FR4 glass epoxy board (copper plate area of 3% or less)
0.8
1.2
1.1
0.7
1.0
0.6
0.9
0.8
0.5
0.7
Pd [W]
0.4
Pd [W]
-40
-20
0
20
40
60
80
100
120
140
160
0.6
0.5
0.3
0.4
0.2
0.3
0.2
0.1
0.1
0.0
0.0
-40
-20
0
20
40
60
80
100
120
140
160
Ta [℃]
Ta [℃]
Fig. 1 Power Dissipation of
BD8904F, BD8905F, BD8906F, BD8907F
Fig. 2 Power Dissipation
of BD8904FV, BD8906FV
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
2/15
2009.07 - Rev.A
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV, BD8907F
●Block
Diagram
2.7V - 5.5V
VDD
3.0V - 5.5V
VDDP
Technical Note
REF
CHGPUMP
S1
VREF
VDD
R1
VDD
VREF
DETREF
CHARGE PUMP
doubler
doubler
S2
PGND
PORADJ
R2
VDET
VREF
VCH
VDD
VDD
TSD
ALARM
POWER_ON
TSD
ALARM
LVS
CLKUP
EN1
2.7MHz
OSC
VDD
VREF
VSEL
OFFB
RSTIN
VREG
LVS
EN2
CARD REG
3V/5V
CGND
SEQUENCER
CMDVCCB
VCC
ALARM
LVS
EN5
RST BUF
RST
CLKDIV1
CLKDIV2
EN
LVS
CLK
DIV
CLK
EN4
CLK BUF
VDD
CLK
PRES
VDD
XTAL2
XT OSC
2MHz - 26MHz
VDD
EN3
XTAL1
VDD
PRESB
VREG
LVS
AUX1C
MAX 1MHz
VDD
IO TRANS
VREG
AUX1
LVS
AUX2C
MAX 1MHz
VDD
IO TRANS
VREG
AUX2
LVS
IOC
MAX 1MHz
IO TRANS
IO
GND
Fig. 3
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© 2009 ROHM Co., Ltd. All rights reserved.
3/15
2009.07 - Rev.A
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV, BD8907F
●Pin
Description
Pin No.
Pin Name
1
2
3
4
5
6
7
8
CLKDIV1
CLKDIV2
VSEL
PGND
S2
VDDP
S1
VCH
Technical Note
I/O
I
I
I
S
I/O
S
I/O
I/O
Signal Level
VDD
VDD
VDD
GND
-
VDDP
-
-
Pin Function
Clock frequency selection input 1
Clock frequency selection input 2
Card supply voltage selection input; “H”: VREG=5V, “L”: VREG=3V
GND for charge pump
Capacitor connection for charge pump
(between S1/S2): C = 100nF (ESR < 100mΩ)
Power supply for charge pump
Capacitor connection for charge pump
(between S1/S2): C = 100nF (ESR < 100mΩ)
Charge pump output: Decoupling capacitor;
Connect C = 100nF (ESR < 100mΩ) between VCH and PGND
Card presence contact input (active “L”)
When PRES or PRESB is active, the card is considered ‘present’ and a
built-in debounce feature of 8ms (typ.) is activated.
Pulled up to VDD with a 2MΩ resistor.
Card presence contact input (active “H”)
When PRES or PRESB is active, the card is considered ‘present’ and a
built-in debounce feature of 8ms (typ.) is activated.
Pulled down to GND with a 2MΩresistor.
Card contact I/O data line; Pulled up to VREG with a 11kΩ resistor
Card contact I/O data line; Pulled up to VREG with a 11kΩ resistor
Card contact I/O data line; Pulled up to VREG with a 11kΩ resistor
GND
Card clock output
Card reset output
Card supply voltage; Connect a capacitor (ESR < 100mΩ) of 100nF -
220nF between VREG and CGND
Power-on reset threshold adjustment voltage input ; set with an external
resistor bridge
9
PRESB
I
VDD
10
11
12
13
14
15
16
17
18
(BD8904F)
(BD8904FV)
(BD8905F)
18
(BD8906F)
(BD8906FV)
(BD8907F)
19
20
21
22
23
24
25
26
27
28
PRES
IO
AUX2
AUX1
CGND
CLK
RST
VREG
I
I/O
I/O
I/O
S
O
O
O
VDD
VREG
VREG
VREG
GND
VREG
VREG
VREG
PORADJ
I
TEST
-
Normally used OPEN. Input voltage range: 0V - VDD voltage
Can also be used at VDD or GND potential.
I
I
S
S
O
I
O
I/O
I/O
I/O
VDD
VDD
VDD
GND
VDD
VDD
VDD
VDD
VDD
VDD
Activation sequence command input; The activation sequence starts by
signal input (H→L) from the host
Card reset signal input
Input power source pin
GND
Alarm output pin (active “L”)
NMOS output pulled up to V
DD
with a 20kΩ resistor
Crystal connection or input for external clock
Crystal connection (leave open pin when external clock source is used)
Host data I/O line; Pulled up to VDD with a 11kΩ resistor
Host data I/O line; Pulled up to VDD with a 11kΩ resistor
Host data I/O line; Pulled up to VDD with a 11kΩ resistor
CMDVCCB
RSTIN
VDD
GND
OFFB
XTAL1
XTAL2
IOC
AUX1C
AUX2C
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© 2009 ROHM Co., Ltd. All rights reserved.
4/15
2009.07 - Rev.A
BD8904F, BD8904FV, BD8905F, BD8906F, BD8906FV, BD8907F
●Pin
Function Diagram
Pin
Pin Name
No.
1
CLKDIV1
Technical Note
Pin Function Diagram
Pin
No.
Pin Name
Pin Function Diagram
2
CLKDIV2
10
PRES
3
VSEL
4
PGND
--------------------------
11
IO
5
S2
12
AUX2
13
6
VDDP
--------------------------
14
AUX1
CGND
--------------------------
7
S1
15
CLK
8
VCH
9
PRESB
16
RST
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© 2009 ROHM Co., Ltd. All rights reserved.
5/15
2009.07 - Rev.A
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