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LC72349M

Features: • Program memory (ROM): - 3072 *16 bits (6K bytes) LC72348G/W - 4096 *16 bits (8K bytes) LC72349 G/W• Data memory (RAM): - 192 * 4 bits LC72348 G/W - 256 * 4 bits LC72349 G/W• Cycle time: 40 s (all 1-word instructions) at 75kHz crystal oscillation• Stack: 8 levels...

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SeekIC No. : 004391865 Detail

LC72349M: Features: • Program memory (ROM): - 3072 *16 bits (6K bytes) LC72348G/W - 4096 *16 bits (8K bytes) LC72349 G/W• Data memory (RAM): - 192 * 4 bits LC72348 G/W - 256 * 4 bits LC72349 G/W&#...

LC72349M Data Sheet

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Part Number:
LC72349M
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/1/11

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Product Details

Description



Features:

• Program memory (ROM):
   - 3072 *16 bits (6K bytes)    LC72348G/W
   - 4096 *16 bits (8K bytes)    LC72349 G/W
• Data memory (RAM):
   - 192 * 4 bits LC72348 G/W
   - 256 * 4 bits LC72349 G/W
• Cycle time: 40 s (all 1-word instructions) at 75kHz crystal oscillation
• Stack: 8 levels
• LCD driver: 48 to 80 segments (1/4 duty, 1/2 bias drive)
• Interrupts: One external interrupt Timer interrupts (1, 5, 10, and 50 ms)
• A/D converter: Three input channels (5-bit successive approximation conversion)
• Input ports: 7 ports (of which three can be switched for use as A/D converter inputs)
• Output ports: 6 ports (of which 1 can be switched for use as the beep tone output and 2 are opendrain ports)
• I/O ports: 16 ports (of which 8 can be switched for use as LCD ports and as mask options) 
• PLL: Supports dead zone control (two types)
• Reference frequencies: 1, 3, 3.125, 5, 6.25, 12.5,and 25 kHz
• Input frequencies: FM band: 10 to 230 MHz AM band: 0.5 to 10 MHz
• Input sensitivity:FM band: 35 mVrms (50 mVrms at 130 MHz or higher frequency) AM band: 35 mVrms
• External reset input: During CPU and PLL operations,instruction execution is started from location 0.
• Built-in power-on reset circuit:The CPU starts execution from location 0 when power is first applied.
• Halt mode: The controller-operating clock is stopped.
• Backup mode: The crystal oscillator is stopped.
• Static power-on function: Backup state is cleared with the PF port
• Beep tone: 1.5 and 3.1 kHz
• Built-in tuner voltage generating circuit:
Cost reduced in tuner-use power supply circuit
• Built-in low-pass filter amplifier
• Optional function switches:
   - PH0 to PH3 (general-purpose input, open-drain output/general-purpose input and output/S13 to S16)
   - PG0 to PG3 (general-purpose input, open-drain output/general-purpose input and output/S17 to S20)
   - VSENSE circuit (provided/not provided)
   - FM DC/DC clock (1/256, 75 kHz)
• Memory retention voltage: 0.9 V at least
• Package: SQFP-64 (0.5-mm pitch), QIC-64 (0.8-mm pitch)


Pinout

Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VDD max
  
0.3 to +4.0
V
Input voltage
VIN
All input pins
0.3 to VDD + 0.3
V
Output voltage
VOUT 1
 Port PE
0.3 to +15
V
VOUT 2
All output ports other than VOUT (1)
0.3 to VDD + 0.3
V
Output current
IOUT 1
PC, PD, PG, PH, EO
0 to +3
mA
IOUT 2
PB
0 to +1
mA
IOUT 3
AOUT, PE
0 to +2
mA
IOUT 4
S1 to S20
300
A
IOUT 5
COM1 to COM4
3
mA
Allowable power dissipation
Pd max
 Ta = 20 to 70°C
300
mW*
Operating temperature
Topr
  
-20to+70
°C
Storage temperature
Tstg
  
-45to+125
°C



Description

The LC72349M and LC72349G/W are low-voltage electronic tuning microcontrollers that include a PLL that operates up to 230 MHz and a 1/4 duty 1/2 bias LCD driver on chip. These ICs can contribute to further end product cost reduction than the LC72341 series while providing improved standby current characteristics. Also these ICs can use the application program for the LC72341 series except the IF counter function.

These ICs are optimal for use in low-voltage portable audio equipment that includes a radio receiver.




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