Preliminary
PH5551A2NA1-E4
Ambient Illuminance Sensor
DESCRIPTION
Data Sheet
R08DS0037EJ0100
Rev.1.00
Aug 03, 2011
The PH5551A2NA1-E4 is a digital ambient illuminance sensor for I
2
C bus interfaces and includes a 16-bit AD
converter. This product has spectral characteristics close to human eye sensitivity and outputs digital signals
corresponding to the ambient brightness.
The PH5551A2NA1-E4 can be used to improve the performance and reduce the power consumption of digital
equipment such as FPD TV sets and mobile phones, by enabling automatic brightness control and automatic switching
on and off of lighting systems.
FEATURES
Small and thin SON package
2.55 x 1.56 x 0.55 mm
Built-in 16-bit AD converter
I
2
C bus interface
Spectral characteristics close to human eye sensitivity
Peak sensitivity wavelength
560 nm TYP.
Wide illuminance range
1 to 65,535 lx
2
I C slave address selectable
2 types
Interrupt function
Pb-free
APPLICATIONS
FPD TV sets, displays
Mobile phones, smartphones
Notebook PCs, tablet PCs
DSCs, DVCs
FA equipments
Lighting systems, etc.
R08DS0037EJ0100 Rev.1.00
Aug 03, 2011
Page 1 of 10
PH5551A2NA1-E4
Chapter Title
PACKAGE DIMENSIONS (UNIT: mm)
Pin No.
1
2
3
4
5
6
Terminal
V
DD
GND
ADDR_SEL
SCL
INT
SDA
I/O
I
I
O
IO
Function
Supply Voltage
GND
Slave Address (2 addresses selectable)
I C bus SCL
Interrupt
I C bus SDA
2
2
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Aug 03, 2011
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PH5551A2NA1-E4
Chapter Title
ABSOLUTE MAXIMUM RATINGS (T
A
= 25C, unless otherwise specified)
Parameter
Supply Voltage
*1
Power Dissipation
Operating Temperature
Storage Temperature
Note:
Symbol
V
DD
P
D
T
A
T
stg
Ratings
4.5
135
30
to +85
40
to +100
t
Unit
V
mW
C
C
*1. Mounted on glass epoxy board (18 mm
13 mm
0.8 mm)
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Symbol
V
DD
MIN.
2.4
TYP.
3.0
MAX.
3.6
Unit
V
ELECTRO-OPTICAL CHARACTERISTICS
(T
A
= 25C, V
DD
= 3.0 V, unless otherwise specified)
Parameter
Supply Current 1
Supply Current 2
Dark Sensor Output
Peak Sensitivity Wavelength
H-Resolution Mode Resolution
L-Resolution Mode Resolution
Measurement Time in
H-Resolution Mode
Measurement Time in
L-Resolution Mode
I C SCL Clock Frequency
2
I C Bus Free Time
I C Hold Time for START
Condition
2
I C Set-up Time for START
Condition
I C Set-up Time for STOP
Condition
2
I C Data Hold Time
I C Data Set-up Time
2
I C „L‟ Period of the SCL Clock
I C „H‟ Period of the SCL Clock
2
I C „L‟ Output Voltage at SDA
Note:
*1 Fluorescent light
2
2
2
2
2
Symbol
I
DD1
I
DD2
p
HRM
LRM
HRt
LRt
f
SCL
t
BUF
t
HDSTA
t
SUSTA
t
SUSTO
t
HDDAT
t
SUDAT
t
LOW
t
HIGH
V
OL
Conditions
Ev = 100 lx
*1
Ev = 100 lx , power-down
Ev = 0 lx
*1
MIN.
TYP.
130
MAX.
290
1
4
Unit
A
A
count
nm
lx
lx
560
1
16
330
21
495
32
400
1.3
0.6
0.6
0.6
0
100
1.3
0.6
0
0.4
0.9
ms
ms
kHz
s
s
s
s
μs
ns
s
s
V
R08DS0037EJ0100 Rev.1.00
Aug 03, 2011
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PH5551A2NA1-E4
Chapter Title
I
2
C BUS INTERFACE SPECIFICATION
1. I C Bus Interface Timing Chart
2
2. Slave Address
Two slave addresses are selectable. The slave address is determined by the ADDR_SEL pin.
When ADDR_SEL
½“H”,
the address is
“1100100”.
When ADDR_SEL
½
“L”,
the address is
“0111001”.
3. I C Protocols
2
(1) Write Format
(2) Read Format
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Aug 03, 2011
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PH5551A2NA1-E4
Chapter Title
INSTRUCTION CODE AND REGISTER MAP
1. Instruction Code
The instruction code is specified after the slave address.
0
Bit 7
1
Bit 6
0
Bit 5
AP_CNT
1
Bit 4
0
Bit 3
0
Bit 2
ADR_PTR
0
Bit 1
0
Bit 0
PWR
*1
Default
REG_SEL
Note: *1 There are two PWR bits, one in the instruction code and one in the control register. When one bit changes, the
other bit also changes at the same time.
(1) REG_SEL: Register selection for Write or Read operation
Code
00
01
10
Register Address Selection
Control Register
Measurement Register
Measurement Register
Write Operation
Control Register
Control Register
Read Operation
Control Register
Measurement Register
Measurement Register
(2) AP_CNT: Address Pointer Control
Code
00
01
10
Description
The address is fixed to the register address specified by ADR_PTR.
The register address is incremented when one item of data is written or read.
If these bits are read after being written, the current register address is output.
(3) ADR_PTR: Register Address
Specify the address of the register to be written or read by using these 3 bits.
(4) PWR: Power On/Power Down
Power on/Power down (1: Power on)
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Aug 03, 2011
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