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NJU3730
PRELIMINARY
I C to PARALLEL CONVERTER
! GENERAL DESCRIPTION
The NJU3730 is a serial-to-parallel converter IC, 2 which converts I C serial data into 3 bits parallel data. The NJU3730 incorporates selectable three kinds of 2 I C-slave-address, which are used to distinguish one of three NJU3730s. Thus, maximum three of the NJU3730 2 can be connected onto the same I C-bus and each 2 NJU3730 operates as a controller for non-I C device or extensive ports. 2 The NJU3730 is suitable for I C-BUS applications such as TV, AV amplifier, mini Stereo component, speaker system and others.
2
! PACKAGE OUTLINE
NJU3730D
NJU3730M
! FEATURES
# # # # # # Converts I C data to parallel data 3 bits parallel output port Selectable 3 slave addresses Operating Voltage 4.5 to 5.5V C-MOS Technology Package Outline DIP8, DMP8
2
! PIN CONFIGURATION
8 7 6 5 VDD DO2 DO1 DO0
SCL SDA SEL VSS
1 2 3 4
! BLOCK DIAGRAM
VDD VSS
SCL
I C BUS Interface
2
Output I C to Parallel Converter
2
DO0 DO1 DO2
Output
SDA
Output
SEL
*Purchase of I C components of New Japan Radio Co., Ltd or one of its sublicensed Associated Companies 2 2 conveys a license under the Philips I C Patent Rights to use these components in an I C system, provided that the 2 system conforms to the I C Standard Specification as defined by Philips.
2
Ver.2003-12-02
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NJU3730
! TERMINAL DESCRIPTION
NO. 1 2 3 4 5 6 7 8 SYMBOL SCL SDA SEL VSS DO0 DO1 DO2 VDD I/O I I/O I O O O FUNCTION 2 I C-bus Serial Clock Input Terminal 2 I C-bus Serial Data Input/Output Terminal Slave-address Select Terminal GND: VSS=0V Output Terminal 0 Output Terminal 1 Output Terminal 2 Power Supply: VDD=+5V
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Ver.2003-12-02
NJU3730 NJU3555
! FUNCTIONAL DESCRIPTION
(1) Data Transmission 2 NJU3730 is controlled by I C-bus using the SCL and the SDA terminals. NJU3730 is a receive-only slave, and doesn't correspond to the general call address ("0000 0000"). The data transfer is available, when the following timing is executed. When the data transferred exactly, NJU3730 outputs "L" level signal from the SDA terminal as acknowledge signal just after each 8 bits.
S Slave-address 1 2 7 8 A 9 1 Output data 2 7 8 A 9 P
SCL SDA
0
MSB
1
0
LSB MSB LSB
S: Start condition A: Acknowledge bit P: Stop condition
Fig.1 Data Transfer Timing (1-1) Start Condition A falling edge of the SDA terminal while the SCL terminal is "H" level is defined as the Start condition. After the Start condition, NJU3730 starts reading the data. (1-2) Slave-address The first byte defines the slave-address. When NJU3730 acknowledges a coincidence its own address with th the address information, it outputs the Acknowledge at 9 bit timing. (1-3) Output Data th The second byte defines the output data. NJU3730 outputs the Acknowledge at 9 bit timing. (1-4) Stop Condition A rising edge of the SDA terminal while the SCL terminal is "H" level is defined as the Stop condition. After the Stop condition, NJU3730 finishes reading the data. (2) Slave-address The slave-address is selected by the condition of the SEL terminal. SEL Low Level Open High Level Slave-address 0100 0000 0100 0010 0100 0100
(3) Output Terminal (DO0-2) Settings Output level of the DO0 to DO2 terminals is selected by the condition of the LSB 3 bits of the output data. DO2 L L L L H H H H DO1 L L H H L L H H DO0 L H L H L H L H Output Data XXXX X000 XXXX X001 XXXX X010 XXXX X011 XXXX X100 XXXX X101 XXXX X110 XXXX X111 Initial Value $
Ver.2003-12-02
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NJU3730
! ABSOLUTE MAXIMUM RATINGS (Ta=25C)
RATING UNIT -0.3 to +7.0 V -0.3 to VDD+0.3 V 500 (DIP) Power Dissipation PD mW 300 (DMP) Operating Temperature Topr -40 to +85 C Storage Temperature Tstg -40 to +125 C Note 1) All voltage values are specified as VSS=0V. Note 2) If the LSI is used on condition beyond the absolute maximum rating, the LSI may be destroyed. Using LSI within electrical characteristics is strongly recommended for normal operation. Use beyond the electrical characteristics conditions will cause malfunction and poor reliability. Note 3) Decoupling capacitors should be connected between VDD-VSS due to the stabilized operation.
Supply Voltage Input Voltage
PARAMETER
SYMBOL VDD VI
! ELECTRICAL CHARACTERISTICS (Ta=25C, VDD=5.0V, VSS=0.0V, unless otherwise noted)
# DC Characteristics PARAMETER
Operating Voltage Operating Current Low level Input Voltage High level Input Voltage Low level Output Voltage High level Output Voltage
SYMBOL VDD IDD VIL VIH VOL VOH
CONDITION No signal, without pull up resistor
MIN. 4.5 0 0.7VDD 0 VDD-0.4
TYP. 5.0 250 -
MAX. 5.5 300 0.2VDD VDD 0.4 VDD
UNIT V A V V V V
IOL=1mA IOH=-1mA
# AC Characteristics PARAMETER SYMBOL MIN. TYP. MAX. 100 1.0 300 UNIT kHz s s s s s s ns s ns s Maximum Clock Frequency fSCL Data Change Minimum Waiting Time tBUF 4.7 Data Transfer Start Minimum Waiting Time tHD:STA 4.0 Low Level Clock Pulse Width tLOW 4.7 High Level Clock Pulse Width tHIGH 4.0 Minimum Start Preparation Waiting Time tSU:STA 4.7 Minimum Data Hold Time tHD:DAT 5.0 Minimum Data Preparation Time tSU:DAT 250 Rise Time tR Fall Time tF Minimum Stop Preparation Waiting Time tSU:STO 4.0 2 Note 4) I C-bus Load Condition: Pull up resistance 4k (Connected to +5V), Load capacitance 200pF (Connected to GND).
SDA
tBUF tR tF tHD:STA
SCL
tSU:STA tSU:STO
tHD:STA tLOW
tHD:DAT
tHIGH
tSU:DAT
P
S
Sr
P
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Ver.2003-12-02
NJU3730 NJU3555
! APPLICATION CIRCUIT
MCU
I C-bus
2
+5V
0.1F
47F
1
+5V
SCL
VDD 8 DO2 7 DO1 6 DO0 5
2 SDA 3 4
SEL VSS
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
Ver.2003-12-02
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