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LC72321

Features: • Serial I/O• Built-in timer interrupts: 80 s, 1 ms, 2 ms and 5 ms• Stack: Eight levels• Beep control: Six beep tones (2.08, 2.25, 2.5, 3.0, 3.75, and 4.17 kHz)• Fast programmable divider•General-purpose counters: HCTR for frequency measurement and LCT...

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SeekIC No. : 004391828 Detail

LC72321: Features: • Serial I/O• Built-in timer interrupts: 80 s, 1 ms, 2 ms and 5 ms• Stack: Eight levels• Beep control: Six beep tones (2.08, 2.25, 2.5, 3.0, 3.75, and 4.17 kHz)R...

LC72321 Data Sheet

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Part Number:
LC72321
Supply Ability:
5000

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

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Product Details

Description



Features:

• Serial I/O
• Built-in timer interrupts: 80 s, 1 ms, 2 ms and 5 ms
• Stack: Eight levels
• Beep control: Six beep tones (2.08, 2.25, 2.5, 3.0, 3.75, and 4.17 kHz)
• Fast programmable divider
•General-purpose counters: HCTR for frequency measurement and LCTR for frequency or period measurement
• LCD driver for displays with up to 56 segments (1/2 duty, 1/2 bias)
• Program memory (ROM): 16 bits ´ 4095
• Data memory (RAM): 4 bits ´ 256
• All instructions are single-word instructions
• Cycle time: 2.67 s, 13.33 s, or 40.00 s (option)
• Unlock FF: 0.55 s detection, 1.1 s detection
• Timer FF: 1 ms, 5ms, 25ms, 125ms
• Input ports*: One dedicated key input port and one high breakdown voltage port
• Output ports*: Two dedicated key output ports, one high breakdown voltage open drain port Two CMOS output ports (of which one can be switched to be used as LCD driver outputs) Seven CMOS output ports (mask option switchable to use as LCD ports)




Specifications

Parameter Parameter Symbol Conditions Ratings Unit
Maximum supply voltage VDD max   0.3 to +6.5 V
Input voltage VIN1 HOLD, INT, RES, SNS, and the G port 0.3 to +13 V
VIN2 Inputs other than VIN1 0.3 to VDD + 0.3 V
Output voltage VOUT1 H port 0.3 to +15 V
VOUT2 Outputs other than VOUT1 0.3 to VDD + 0.3 V
Output current IOUT1 All D and H port pins 0 to 5 mA
IOUT2 All E and F port pins 0 to 3 mA
IOUT3 All B and C port pins 0 to1 mA
IOUT4 S1 to S28 and all I port pins 0 to 1 mA
Allowable power
dissipation		 Pd max Ta = 40 to +85°C 300* mW
Operating temperature Topg   40 to +85 °C
Storage temperature Tstg   45 to +125 °C



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