User Manual

20
Mini-RFM - Reference Guide November ’00
4.3 Timing Characteristics
at T
amb
=0-50 °C, VSRL=5.0 V, VSP=5.0 V
Parameter Description Condition
Pin No.
of ST1
min. nom. max. Unit
f_TX Transmitter frequency - A1 134.1 134.2 134.3 kHz
f_OSC
Internal oscillator
frequency
- - - 4294.4 - kHz
f_mRX
Center frequency of
receiver
- - - 128.2 - kHz
b_RX Bandwidth of receiver - - - 22 - kHz
t_rin,
t_fin
Rise and fall time of
the input signals
TXCT- and TPC
- 14, 15 - - 100 ns
t_rout,
t_fout
Rise and fall time of
the output signals
RXCK, RXDT, RXSS-
-
17, 18,
20
--1µs
f_REPwrt
Repetition rate to
program with Antenna
= RI-ANT-P02A
t_wrt=310ms
TPC=”high
---1Hz
f_REPrd
Repetition rate to read
with Antenna =
RI-ANT-P02A
t_charge=
50ms
TPC=”high”
---4Hz
t_offL
Transmitter OFF-time
for databit = “L”
t_bit=2ms - - 0.5 - ms
t_offH
Transmitter OFF-time
for databit=”H”
t_bit=2ms - - 1.2 - ms