LC5822 Selling Leads, Price trend, LC5822 DataSheet download, circuit diagram from SeekIC.com

Features: • These microcontrollers are high-end versions of the LC5800 and provide the following features. Low Current Drain * In halt mode (typical)• Ceramic oscillator 400 kHz (3.0 V) 200 A• Crystal oscillator 32 kHz (1.5 V, Ag specifications)3.0 A (LCD biases other than 1/3) 4...

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SeekIC No. : 004391711 Detail

LC5822: Features: • These microcontrollers are high-end versions of the LC5800 and provide the following features. Low Current Drain * In halt mode (typical)• Ceramic oscillator 400 kHz (3.0 V) ...

LC5822 Data Sheet

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Part Number:: LC5822
Supply Ability:: 5000

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Product Details

Description

Features:

• These microcontrollers are high-end versions of the LC5800 and provide the following features. Low Current Drain * In halt mode (typical)
• Ceramic oscillator 400 kHz (3.0 V) 200 A
• Crystal oscillator 32 kHz (1.5 V, Ag specifications)
3.0 A (LCD biases other than 1/3) 4.5 A (LCD drive: 1/3 bias)
• Crystal oscillator 32 kHz (3.0 V, Li specifications) 2.0 A (LCD biases other than 1/3) 6.0 A (LCD drive: 1/3 bias) Timer and Counter Functions
• One 8-bit programmable timer (May be used as an event counter)
• One 8-bit programmable reload timer
• Time base timer (for clocks)
• Watchdog timer
• 8-bit serial I/O (3-pin synchronous system) Standby Functions
• Clock standby function (halt mode) Only the oscillator circuits, the divider circuit, and the LCD driver operate. All other internal operations are stopped. This provides a power-saving function in which current drain is minimized, and allows a clock function to be implemented easily with low power dissipation. Furthermore, low-speed and high-speed modes can be implemented by setting the operating modes of the two oscillator circuits.
• Full standby function (hold mode)
• Halt mode can be cleared by any of two external and two internal interrupts Improved I/O Functions
• External interrupt pins
• Input pins that can clear halt mode: 10 pins (maximum)
• Input ports with input resistors that can be controlled from software: 8 pins (maximum)
• Pins with a function that prevents the input port floating state: 8 pins (maximum)
• LCD drive pins: 4 pins (common), 42 pins (segment outputs)
• General-purpose I/O ports: 16 pins (when all 4 P port pins are used)
• General-purpose inputs: 8 pins
• General-purpose outputs (1): 1 pin (the ALM pin)
• General-purpose outputs (2): 42 pins (when all 42 of the
LCD segment outputs are switched over to function as general-purpose outputs)
• 8-bit serial output port: 1 set (3 pins: output, input, and clock) Functional Overview
• Program ROM: 4096 * 16 bits LC5824 3072 *16 bits LC5823 2048 *16 bits LC5822
• Internal RAM: 256 ´ 4 bits
• All instructions execute in a single cycle.
• Extensive set of interrupt functions for clearing halt and hold mode
- 8 halt mode clearing functions
- 5 hold mode clearing functions
- 6 interrupt functions
- Subroutines can be nested up to 8 levels (Specialpurpose registers that are shared with the interrupt function are built in.)
• Powerful hardware to increase system processing capacity
- Segment port related hardware Built-in segment PLA circuit Built-in segment decoder Support for six different LCD drive specifications Outputs can be switched to CMOS levels
- Built-in 8-bit synchronous serial I/O circuit
- 8-bit read/write timer (plus a separate 8-bit prescaler; can be used as and event counter)
- 8-bit reload timer (plus built-in 8-bit prescaler)
- Built-in 8-bit prescaler (for use with timer 1, timer 2, and the serial counter)
- All of RAM can be used a working area (RAM bank system)
- Dedicated data pointer register for RAM access
- 15-stage divider circuit for clocks (also used as the LCD voltage alternation frequency generator)
- 8-bit table reference function (reads 8-bit ROM data)
- Chattering prevention circuit (on two ports)
- Alarm signal generation circuit
• LCD panel drive output pins with high flexibility (42 pins)

Application

• LCD display in multi-function watches, timers, and other products
• Control and LCD display in timers
• Control and LCD display in miniature test equipment, health maintenance equipment, and other products
• These microcontrollers are optimal for products that include an LCD display, especially battery powered products.

Pinout

Connection Diagram

Specifications

Parameter	Symbol	Conditions and applicable pins	Ratings			Unit
Parameter	Symbol	Conditions and applicable pins	min	typ	max	Unit
Maximum supply voltage	V_DD		0.3		+4.0	V
	V_DD1		0.3		+4.0	V
	V_DD2		0.3		+5.5	V
	V_DD3	For 1/3-bias LCD drive techniques	0.3		+4.0	V
	V_DD3	For LCD drive techniques other than 1/3 bias	0.3		+4.0	V
Maximum input voltage	V_IN1	S1 to S4, K1 to K4, M1 to M4, A1 to A4, SO1 to SO4, RES,TST	0.3		V_DD + 0.3	V
Maximum output voltage	V_OUT1	M1 to M4, A1 to A4, SO1 to SO4, ALM, CUP2(With M1 to M4, A1 to A4, and SO1 to SO4 in input mode)	0.3		+0.3	V
Maximum output voltage	V_OUT2	SEGOUT, COM1 to COM4, CUP1	0.3		V_DD3 + 0.3	V
Operating temperature	T_opg		20		+65	°C
Storage temperature	T_stg		20		+125	°C

Description

The LC5822, LC5823, and LC5824 are CMOS microcontrollers that feature the low-voltage operation required for battery-power applications and that provide 4 KB, 6 KB, or 8 KB of ROM, 1 kilobit of RAM, and an LCD driver.

These microcontrollers support an instruction set based on that of the earlier LC5800, LC5812, and LC5814 for excellent efficiency in software development

LC5822

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