T48C862M-R4-TNQ Atmel, T48C862M-R4-TNQ Datasheet - Page 80

• Manufacturer Part Number: T48C862M-R4-TNQ
• Description: IC MON TIRE PRESS 433MHZ 24-SOIC
• Manufacturer: Atmel

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: -

Combination Mode 3:
Manchester Modulation 1
Combination Mode 4:
Manchester Modulation 2
80
T48C862-R4 [Preliminary]
SSI mode 1:
Timer 2 mode 1, 2, 3 or 4:
Timer 2 output mode 5:
Figure 76. Manchester Modulation 1
SSI mode 1:
Timer 2 mode 3:
Timer 2 output mode 5:
The 4-bit stage can be used as prescaler for the SSI to generate the stop signal for mod-
ulator 2. The SSI has a special mode to supply the prescaler with the shift clock.
The control output signal (OMSK) of the SSI is used as stop signal for the modulator.
Figure 77 on page 80 shows an example for a 12-bit Manchester telegram.
Figure 77. Manchester Modulation 2
Counter 2/1
Buffer full
Timer 2
Mode 3
OMSK
TOG2
MSM
SCLI
T2O
SCL
T2O
SIR
SO
SC
SO
SC
0
Data: 00110101
Bit 7
Bit 7
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0
0
0
0
0
0
8-bit shift register internal data output (SO) to the Timer 2
modulator stage
8-bit compare counter and 4-bit prescaler
The modulator 2 of Timer 2 modulates the SSI data output
to Manchester code
0
0
8-bit shift register internal data output (SO) to the Timer 2
modulator stage
8-bit compare counter with 4-bit programmable prescaler
The modulator 2 of Timer 2 modulates the SSI internal
data output to Manchester code
Counter 2/1 = Compare Register 2/1 (= 4)
1
0
1
0
1
1
8-bit SR-data
0
0
0
0
1
1
2
1
3
0
4
0
0
1
Bit 0
Bit 0
1
4551C–4BMCU–01/04
1
2
3