HC05L5

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HC05L5 Microcontroller Technical Summary

Overview

The HC05L5 is an 80-pin microcontroller unit (MCU) with advanced on-chip peripheral functions. It features 8KB of user ROM, 256 bytes of static RAM, and sophisticated I/O capabilities. Designed for embedded applications requiring LCD control, timing functions, and serial communication, the HC05L5 offers a robust feature set in a single-chip package.

Key Features

• 8-bit M68HC05 CPU core
• 8KB mask ROM program memory
• 256 bytes of static RAM
• Five parallel I/O ports (Ports A-E)
• Integrated LCD driver with multiple bias options
• 8-bit and 16-bit timer subsystems
• Simple Serial Peripheral Interface (SSPI)
• Computer Operating Properly (COP) watchdog timer
• Key wakeup interrupt capability
• Multiple low-power modes
• Dual oscillator support

Applications

• Consumer electronics
• Industrial control systems
• Automotive electronics
• Medical devices
• Appliance control
• Instrumentation
• Human-machine interfaces with LCD displays

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VDD): -0.3V to +7.0V
• Input Voltage: -0.3V to VDD+0.3V
• Operating Temperature: -40°C to +85°C
• Storage Temperature: -55°C to +150°C

Recommended Operating Conditions

• Supply Voltage (VDD): 3.0V to 5.5V
• Operating Temperature: -40°C to +85°C
• Input High Voltage: 0.7VDD to VDD
• Input Low Voltage: VSS to 0.3VDD

DC Characteristics (VDD = 5V ±10%)

• Input High Voltage: 3.5V min
• Input Low Voltage: 1.5V max
• Output High Voltage: 4.2V min (Ioh = -0.8mA)
• Output Low Voltage: 0.4V max (Iol = 1.6mA)
• Supply Current (Run mode): 5mA typical @ 4MHz
• Supply Current (Wait mode): 2mA typical
• Supply Current (Stop mode): 10μA max

Package Information

The HC05L5 is available in an 80-pin Quad Flat Pack (QFP) with the following mechanical specifications:

• Package Type: QFP-80 (Case 841B-01)
• Body Size: 14mm × 14mm
• Lead Pitch: 0.65mm
• Lead Count: 80
• Lead Width: 0.22mm nominal
• Lead Thickness: 0.10mm nominal
• Package Height: 2.45mm max

Memory Organization

• 0000-001F: I/O and control registers
• 0020-004F: Option map for I/O configurations
• 0050-00FF: Reserved
• 0100-01FF: 256-byte RAM
• 1F00-1FFF: Self-check ROM
• 2000-3FFF: 8KB user ROM

Peripheral Features

Timer System

• 8-bit timer with input capture/output compare
• 16-bit timer with enhanced features
• Programmable prescaler
• Event input/output capabilities

LCD Driver

• Supports 1/1, 1/2, 1/3, and 1/4 duty cycles
• 1/2 and 1/3 bias options
• Up to 38 frontplane and 3 backplane outputs
• Integrated voltage divider for LCD bias

Simple Serial Peripheral Interface (SSPI)

• Full-duplex operation
• Master/slave modes
• Programmable clock polarity and phase
• 8-bit shift register

Development Support

• In-circuit emulation capability
• Mask option verification
• ROM verification units available
• Comprehensive instruction set with multiple addressing modes

Ordering Information

The HC05L5 is available in several versions with different ROM configurations and temperature ranges. Consult the manufacturer's latest datasheet for current ordering options and part numbers.

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