T48C862M-R4-TNQ Atmel, T48C862M-R4-TNQ Datasheet - Page 26
T48C862M-R4-TNQ
Manufacturer Part Number
T48C862M-R4-TNQ
Description
IC MON TIRE PRESS 433MHZ 24-SOIC
Manufacturer
Atmel
Datasheet
1.T48C862M-R4-TNS.pdf
(107 pages)
Specifications of T48C862M-R4-TNQ
Frequency
433MHz
Modulation Or Protocol
FM, FSK
Data Rate - Maximum
32 kBaud
Power - Output
10dBm
Current - Transmitting
9.5mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Memory Size
1KB EEPROM, 1KB RAM
Voltage - Supply
2 V ~ 4 V
Operating Temperature
-40°C ~ 125°C
Package / Case
24-SOIC (0.200", 5.30mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Applications
-
- Current page: 26 of 107
- Download datasheet (2Mb)
External Input Clock
RC-oscillator 2 with External
Trimming Resistor
26
T48C862-R4 [Preliminary]
Figure 21. RC-oscillator 1
The OSC1 or OSC2 (mask option) can be driven by an external clock source provided it
meets the specified duty cycle, rise and fall times and input levels. Additionally, the
external clock stage contains a supervisory circuit for the input clock. The supervisor
function is controlled via the OS1, OS0 bit in the SC register and the CCS bit in the
CM register. If the external input clock is missing for more than 1 ms and CCS = 0 is set
in the CM register, the supervisory circuit generates a hardware reset.
Figure 22. External Input Clock
Table 5. Supervisor Function Control Bits
The RC-oscillator 2 is a high resolution trimmable oscillator whereby the oscillator fre-
quency can be trimmed with an external resistor between OSC1 and V
configuration, the RC-oscillator 2 frequency can be maintained stable with a tolerance of
±10% over the full operating temperature and a voltage range V
For example:
An output frequency at the RC-oscillator 2 of 2 MHz can be obtained by connecting a
resistor R
OS1
1
1
x
ext
= 360 k (see Figure 23 on page 27).
Clock
Clock
Ext.
Ext.
or
OS0
1
1
0
OSC1
OSC2
oscillator 1
Control
RC
Ext. input clock
ExIn
Clock monitor
CCS
RcOut1
0
1
x
Stop
ExOut
Stop
Osc-Stop
Supervisor Reset Output (Res)
RcOut1
Osc-Stop
RcOut1
CCS
Res
DD
Disable
Disable
Enable
from 2.5 V to 6.0 V.
4551C–4BMCU–01/04
DD
. In this
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