LC72358N

• ROM
- LC72358N: 8K steps (8191 * 16 bits)
- LC72362N: 12K steps (12287 * 16 bits)
- LC72366: 16K steps (16383* 16 bits)
The subroutine area in both products is 4K steps (4095 * 16 bits).
• RAM
- LC72358N, 72362N: 512 * 4 bits (banks 0 to 7)
- LC72366: 1K * 4 bits (banks 0 to F)
• Stack: Eight levels
• Serial I/O: Three channels (8-bit 3-wire format) There are three internal serial clocks: 12.5 kHz,37.5 kHz and 187.5 kHz.
• External interrupts:
Two channels (the INT0 and INT1 pins) Switching between rising and falling edge detection is supported.
• Internal interrupts: Three channels
- Two internal timer interrupt channels The timers provide eight interrupt periods: 100 s,1 ms, 2 ms, 5 ms, 10 ms, 50 ms, 125 ms and 250 ms.
- One serial I/O interrupt channel
• Multiple interrupt levels:
Four levels
Hardware priority order
INT0 pin > INT1 pin > SI/O pin > internal timer 0 >internal timer 1
• A/D converter: Six channels (6-bit successive approximation type)
• General-purpose ports
- Input ports: 10
- Output ports: 28
- I/O ports: 25 (These pins can be switched between input and output in bit units.)
• PLL block
- Built-in sub-charge pump for high-speed locking
- Support for dead zone control
- Built-in unlock detection circuit
- Twelve reference frequencies: 1, 3, 3.125, 5, 6.25, 9,10, 12.5, 25, 30, 50 and 100 kHz
• Universal counter: 20 bits Supports frequency and period measurement with counting periods of 1, 4, 8 and 32 ms.
• Timers: Timer interrupt periods 100 s, 1 ms, 2 ms, 5 ms, 10 ms, 50 ms, 125 ms and 250 ms
• Beep: Six frequencies: 2.08 kHz, 2.25 kHz, 2.5 kHz,3.0 kHz, 3.75 kHz, 4.17 kHz.
• Reset: Built-in voltage detection type reset circuit
• Cycle time: 1.33 s (all instructions execute in one cycle)
• Halt mode: The microcontroller operating clock is stopped in halt mode.
There are four types of event that clear halt mode: interrupt requests, timer FF overflows, key inputs, and hold pin inputs.
• Operating supply voltage: 4.5 to 5.5 V (3.5 to 5.5 V when only the controller block operates)
• Package: QFP80E (QIP80E)
• OTP version: LC72P366
• Development tools: Emulator .................RE32N
Evaluation chip.......LC72EV350
Evaluation chip board................................EB-72EV350

The LC72358N, LC72362N, and LC72366 are 1.33 s instruction execution time single-chip microcontrollers for electronic tuning applications. These products incorporate a high-speed locking circuit and a high-performance direct PLL circuit that can control the local oscillator C/N characteristics. These products have 256 or 512 bytes of RAM and 16K, 24K or 32K bytes of program ROM on chip, and incorporate a three-channel serial I/O interface,a six-channel A/D converter and other interfaces.