RFPT200 Datasheet, PDF (3/7 Pages) TEMEX – The CHARON is a SPI controlled high accuracy TCXO with embedded timer and alarm function

9.0
Line
9.1
9.2
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10.0
Line
10.1
10.2
-----
11.0
Line
11.1
11.2
11.3
-----
12.0
Line
12.1
12.2
-----
13.0
Line
13.1
13.2
13.3
13.4
13.5
13.6
13.7
-----
14.0
Line
14.1
14.2
-----
15.0
Line
15.1
15.2
15.3
-----
LF TIMING PULSE: PULSE PERIOD
Parameter
Test Condition
LF pulse period
Sync counter setting. User programmable register.
Sync ratio at power up: 4096
LF pulse period
LF timing pulse period = oscillator period * ripple * sync
Value
2 to 4096
0.2 to
26214.4
Unit
Sync.
ratio
µs
LF TIMING PULSE: ENABLE SETTING
Parameter
Test Condition
LF output off
SPI or bonded in paralled to RF enable
LF output on
SPI or bonded in paralled to RF enable
Value
0
1
Unit
COUNTER
Parameter
32 bit timer
32 bit min. rollover
period
32 bit max. rollover
period
Test Condition
Continuous count of LF, reset on power up, read via SPI
Default: 0. Maximum: 2³²-1 LF counts
(2³²-1) x LF period
(2³²-1) x LF period
Value
Unit
859 min
sec
1303 max
day
ALARM
Parameter
32 bit match
Alarm dedicated
output
Test Condition
Set via SPI which also resets alarm output when set. User
programmable register.
Default: 0. Maximum: 2³²-1
Alarm latched when match detector matches timer.
Power up default: 1 (Note 4)
Value
Unit
0 to 1
Alarm
high
FREQUENCY CHARACTERISTICS (DAC)
Parameter
Test Condition
Frequency min. shift
At 0 - relative to DAC 128
Frequency nominal
shift
At 0 - relative to DAC 128
Frequency max. shift At 0 - relative to DAC 128
Frequency min. shift
At 255 - relative to DAC 128
Frequency nominal
shift
At 255 - relative to DAC 128
Frequency max. shift At 255 - relative to DAC 128
Frequency change per Frequency (DAC 255 – DAC 0) / 256
bit
Nominal value 0.08 ppm
Value
-5 to -10
-7 to -15
Unit
ppm
ppm
-10 to -20
5 to 10
7 to 15
ppm
ppm
ppm
10 to 20
0.04 to 0.2
ppm
ppm
STANDARD 4 WIRE SPI INTERFACE (CPOL 0, CPHA 0 MODE)
Parameter
Description
Diagram
Refer to standard 4 wire SPI interface diagram
Digital control and LF
output
Digital control specification available on request
MARKING
Parameter
Type
Line 1
Line 2
Description
Laser marked
R and manufacturing identifier (X YW) (see model drawing)
Pad 1 / static sensitivity identifier (Δ), abbreviated part number (0000), device date code
(YW) (see model drawing)
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