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LC723748 Dataheets PDF



Part Number LC723748
Manufacturers Sanyo Semicon Device
Logo Sanyo Semicon Device
Description ETR Microcontrollers
Datasheet LC723748 DatasheetLC723748 Datasheet (PDF)

Ordering number : EN5931 CMOS IC LC723732/40/48/56/64 ETR Microcontrollers Overview The LC723700 Series are large-capacity ETR microcontrollers that achieve an instruction execution time of 1.33 µs and provide up to 64 KB of ROM and up to 2 KB of RAM. They include an on-chip high-performance PLL circuit that features an added high-speed lock circuit and can control the C/N characteristics of a local oscillator. They also provide a rich set of on-chip interface circuits, including a 3-channel .

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Ordering number : EN5931 CMOS IC LC723732/40/48/56/64 ETR Microcontrollers Overview The LC723700 Series are large-capacity ETR microcontrollers that achieve an instruction execution time of 1.33 µs and provide up to 64 KB of ROM and up to 2 KB of RAM. They include an on-chip high-performance PLL circuit that features an added high-speed lock circuit and can control the C/N characteristics of a local oscillator. They also provide a rich set of on-chip interface circuits, including a 3-channel serial I/O port, and an 8input 8-bit A/D converter. • • Functions • ROM — Up to 32K steps (32,767 × 16 bits) — The subroutine area holds 4 K steps (4,096 × 16 bits) • RAM — Up to 4 K × 4 bits (In banks 00 through 3F) LC723732 – ROM: 32 KB, RAM 1 KB LC723740 – ROM: 40 KB, RAM 2 KB LC723748 – ROM: 48 KB, RAM 2 KB LC723756 – ROM: 56 KB, RAM 2 KB LC723764 – ROM: 64 KB, RAM 2 KB • Stack — 32 levels • Serial I/O — Three channels. These circuits can support both 2wire and 3-wire 8-bit communication techniques, and can be switched between MSB first and LSB first operation. — One of six internally generated serial transfer clock rates can be selected: 12.5, 37.5, 187.5, 281.25, 375, and 450 kHz. • External interrupts — Seven interrupt inputs (pins INT0 through INT5, and the HOLD pin) These interrupts can be set to switch between rising and falling edges, although the HOLD pin only supports falling edge detection. • Internal interrupts — Seven interrupts; four internal timer interrupts, and three serial I/O interrupts. • Interrupt nesting levels — 16 levels — Interrupt are prioritized in hardware as follows: • • • • • HOLD pin > INT0 pin > INT1 pin > INT2 pin > INT3 pin > INT4 pin > INT5 pin > S-I/O0 > S-I/O1 > S-I/O2 > internal TMR0 > internal TMR1 > internal TMR2 > internal TMR3 A/D converter — 8-bit resolution and 8 inputs General-purpose ports — Input ports: 12 — Output ports : 4 — I/O ports: 62 (These pins can be switched between input and output in 1-bit units.) PLL block — Includes a sub-charge pump for high-speed locking. — Supports 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. — A second PLL circuit is also included for use in AM up conversion. Universal counter — This 20-bit counter can be used for either frequency or period measurement and supports four measurement (calculation) periods: 1, 4, 8, and 32 ms. Timers — Two fixed timers and two programmable timers (8bit counters) TMR0: Supports four periods: 10 µs, 100 µs, 1 ms, and 5 ms TMR1: Supports four periods: 10 µs, 100 µs, 1 ms, and 10 ms TMR2 and TMR3: Programmable 8-bit counters. Input clocks with 10 µs, 100 µs, and 1 ms periods are provided. — One 125-ms timer flip-flop provided. Beep circuit — Provides 12 fixed beep tones: 0.5, 1, 2, 2.08, 2.2, 2.5, 3.33, 3.75, 4.17, and 7.03 kHz. — Programmable 8-bit beep tone generator. Reference clocks with frequencies of 5 kHz, 15 kHz, and 50 kHz are p.


LC723740 LC723748 LC723756


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