32kHz output Crystal Oscillator IC with Frequency Adjustment Function
OVERVIEW
The WF5091A is a 32.768kHz output crystal oscillator module IC with built-in frequency adjustment functions by EEPROM. The
WF5091A is ideal for wide range of operating supply voltage, low current consumption, low jitter, crystal oscillator module.
FEATURES
▪
Oscillation and output frequency: 32.768kHz
▪
Wide range of operating supply voltage: 1.2 to 5.5V
▪
Operating temperature of oscillation operation: -40 to +85°C
▪
Low current consumption: 1A typ. (V
DD
=3.3V, no load)
▪
CMOS input / output
▪
±0.4mA output drive capability (V
DD
=3.3V)
▪
f
0
adjustment function by EEPROM (3-wire serial interface)
▪
Output disable function
ORDERING INFORMATION
Device
WF5091A
Package
Wafer form
SEIKO NPC CORPORATION -
1
WF5091A
PAD LAYOUT
(Unit:
m)
(950,880)
VDD
XT
Y
XTN
INHN
(0,0)
1
2
3
4
7
Q
6
5
VPP
VSS
X
Chip size: 0.95mm × 0.88mm
Wafer thickness: 130 ± 15m
PAD size: 85m
Chip base: V
SS
level
PIN DESCRIPTION and PAD COORDINATES
No.
1
2
3
4
5
6
PIN
VDD
XT
XTN
INHN
(SCLK)
VSS
VPP
Q
(SDATA)
I/O
*1
-
I
O
I
-
-
(+) supply voltage
Crystal input connection pin
Crystal output connection pin
Input pin controlled output state (Hi-Z output at LOW, 32.768kHz output at HIGH,
OPEN connection prohibit)
SCLK (Clock input) pin in serial interface mode
(-) ground
Serial interface enable pin
HIGH: serial interface mode (EEPROM read/write), LOW or OPEN: normal mode
Pull-down resistor built-in
7
I/O
32.768kHz output pin
SDATA (Data input/output) pin in serial interface mode
O: Output pin
837.5
596.5
837.5
332.2
837.5
120.5
112.5
120.5
Description
PAD coordinate [m]
X
112.5
112.5
112.5
Y
648.8
514.8
332.2
*1. I/O: Input / Output pin
I: Input pin
BLOCK DIAGRAM
XT
XTN
VDD
Q
INHN
VSS
C6-0
SCLK
Serial interface
EEPROM
SDATA
VPP
SEIKO NPC CORPORATION - 2
WF5091A
SPECIFICATIONS
Absolute Maximum Ratings
Vss=0V
Parameter
Supply voltage
*1
Program supply voltage
Input voltage 1
*1*2
Input voltage 2
*1
Output voltage
*1*2
Output current
*3
*1
Symbol
V
DD
V
PP
V
IN
V
IN2
V
OUT
I
OUT
T
j
N
EW
T
STG
Conditions
Between VDD and VSS
Between VPP and VSS
Q pin
INHN pin
Q pin
Q pin
-
-
-
Rating
-0.3 to +6.5
-0.3 to +22.0
-0.3 to V
DD
+0.3
-0.3 to +6.5
-0.3 to V
DD
+0.3
±3
+125
100
-65 to +150
Unit
V
V
V
V
V
mA
°C
times
°C
Junction temperature
*3
EEPROM rewrite cycles
*3
Storage temperature
*4
*1. This parameter rating is the values that must never exceed even for a moment. This product may suffer breakdown if this parameter rating is exceeded.
Operation and characteristics are guaranteed only when the product is operated at recommended operating conditions.
*2. V
DD
is a V
DD
value of recommended operating conditions.
*3. Do not exceed the absolute maximum ratings. If they are exceeded, a characteristic and reliability will be degraded.
*4. When stored in nitrogen or vacuum atmosphere applied to IC itself only (excluding packaging materials).
Recommended Operating Conditions
Vss=0V
Parameter
Operating supply voltage
Input voltage
Symbol
V
DD
V
IN
V
PPW
Program supply voltage
V
PPR
Operating temperature
T
a
Conditions
MIN
Between VDD and VSS
*1
Input pins
VPP pin, EEPROM write mode
T
a
=25°C , V
DD
=3.0 to 3.6V
VPP pin, EEPROM read mode
T
a
=25°C , V
DD
=3.0 to 3.6V
Condensation free
1.2
V
SS
19.0
1.8V
DD
-40
Rating
TYP
MAX
5.5
V
DD
20.0
V
7.0
+85
°C
V
V
Unit
*1. Mount a ceramic chip capacitor that is larger than 0.1μF proximal to IC between VDD and VSS in order to obtain stable operation of WF5091A. In
addition, the wiring pattern between IC and capacitor should be as wide as possible.
Note. Since it may influence the reliability if it is used out of range of recommended operating conditions, this product should be used within this range.
SEIKO NPC CORPORATION - 3
WF5091A
Electrical Characteristics
DC Characteristics
V
DD
=1.2 to 5.5V, V
SS
=0V, T
a
=-40 to +85°C, C
LOUT
=15pF unless otherwise noted.
Parameter
Symbol
Conditions
MIN
Measurement circuit 1, C
LOUT
=0pF
I
DD1
Operating current consumption
I
DD2
INHN=“H”, V
DD
=3.3V
Measurement circuit 1, C
LOUT
=0pF
INHN=“H”, V
DD
=5.5V
Measurement circuit 2, C
LOUT
=15pF
INHN=“H”, V
DD
=3.3V
Measurement circuit 2, C
LOUT
=15pF
INHN=“H”, V
DD
=5.5V
Current consumption in boot
function
Current consumption in disable
function
I
BOOT
I
DIS
Measurement circuit 1, boot
*1
C
LOUT
=0pF, V
DD
=3.3V
Measurement circuit 1, INHN=Low, V
DD
=3.3V
Measurement circuit 4, I
OH
=-0.4mA
High-level output voltage
V
OH
1.5V≤V
DD
≤5.5V
Measurement circuit 4, I
OH
=-0.1mA
1.2V≤V
DD
<1.5V
Measurement circuit 4, I
OL
=0.4mA
Low-level output voltage
V
OL
1.5V≤V
DD
≤5.5V
Measurement circuit 4, I
OL
=0.1mA
1.2V≤V
DD
<1.5V
Measurement circuit 5, INHN pin
High-level input voltage 1
V
IH1
1.2V≤V
DD
<1.5V
Measurement circuit 5, INHN pin
1.5V≤V
DD
≤5.5V
Measurement circuit 5, INHN pin
Low-level input voltage 1
V
IL1
1.2V≤V
DD
<1.5V
Measurement circuit 5, INHN pin
1.5V≤V
DD
≤5.5V
High-level input voltage 2
Low-level input voltage 2
VPP pull-down resistor
V
IH2
V
IL2
R
pd
Measurement circuit 5, VPP pin, T
a
=25°C
V
DD
=3.0 to 3.6V
Measurement circuit 5, VPP pin, T
a
=25°C
V
DD
=3.0 to 3.6V
100
1.8V
DD
1.3V
DD
0.8V
DD
V
0.7V
DD
0.2V
DD
V
0.3V
DD
V
V
kΩ
V
DD
-0.4
V
V
DD
-0.4
0.4
0.4
V
V
Rating
TYP
1.0
1.7
2.7
4.4
1.5
0.9
MAX
2.0
3.2
A
3.7
5.9
2.5
1.5
A
A
Unit
*1. Boot function operates from oscillation start to 0.5s (t
sta
+0.5sec) after applying power supply.
SEIKO NPC CORPORATION - 4
WF5091A
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