cy7c63100

CY7C63100 - 8-Bit RISC Microcontroller with USB Interface

Overview

The CY7C63100 is an 8-bit RISC One Time Programmable (OTP) microcontroller featuring an integrated 1.5 Mbps USB serial interface engine. This device is part of Cypress's USB microcontroller family optimized for low-speed USB peripheral applications. With its USB-optimized instruction set and integrated USB transceiver, it provides a cost-effective solution for HID (Human Interface Device) applications such as mice, joysticks, and gamepads.

The microcontroller employs a Harvard architecture with 128 bytes of RAM and either 2K or 4K bytes of EPROM (depending on variant). It operates with a 6 MHz external ceramic resonator or crystal, which is internally doubled to 12 MHz for core operation. The device includes up to 16 general-purpose I/O pins with various enhanced features.

Key Features

• USB Compliance:
  • Conforms to USB 1.5 Mbps Specification, Version 1.0
  • Compliant with USB HID Specification, Version 1.0
  • Supports 1 device address and 2 endpoints
• Microcontroller Core:
  • 8-bit RISC architecture with 35 USB-optimized instructions
  • Harvard architecture with separate program/data buses
  • 6 MHz external clock with 12 MHz internal operation
• Memory:
  • 128 bytes of RAM
  • 2K bytes of EPROM (CY7C63100A)
  • 4K bytes of EPROM (CY7C63101A variant)
• I/O Capabilities:
  • Integrated USB transceivers
  • Up to 16 Schmitt trigger I/O pins with internal pull-up
  • Up to 8 I/O pins with LED drive capability
  • Special purpose I/O mode for mouse applications
  • Maskable interrupts on all I/O pins
• System Features:
  • 8-bit free-running timer
  • Watchdog timer (WDT)
  • Internal power-on reset (POR)
  • Instant-On Now™ for Suspend and Periodic Wake-up Modes
  • Improved output drivers to reduce EMI
• Operating Conditions:
  • 4.0V to 5.25V operating voltage
  • 0°C to 70°C operating temperature

Applications

The CY7C63100 is ideal for various low-speed USB peripheral applications including:

• Computer mice and pointing devices
• Joysticks and game controllers
• USB input devices (keyboards, keypads)
• Simple USB data acquisition systems
• USB-to-legacy interface converters
• Low-speed USB sensors and actuators

Functional Description

Memory Organization

The microcontroller features separate program and data memory spaces:

• Program Memory: 2K/4K bytes of EPROM organized as 1024/2048 x 16 bits
• Data Memory: 128 bytes of RAM organized as 128 x 8 bits
• Security: Includes a security fuse bit to protect program memory

I/O Ports

The device features two GPIO ports:

• Port 0: 8 low-current I/O pins with Schmitt trigger inputs and internal pull-ups
• Port 1: 8 high-current I/O pins capable of driving LEDs directly
• All I/O pins support maskable interrupts
• Special output driver circuits minimize EMI emissions

USB Engine

The integrated USB engine provides:

• Full-speed (1.5 Mbps) USB 1.0 compliance
• Support for control (Endpoint 0) and interrupt (Endpoint 1) transfers
• Automatic USB enumeration process handling
• Integrated USB transceiver with compliant driver/receiver characteristics

System Control

The microcontroller includes several system control features:

• Multiple reset sources (Power-On, Watchdog, USB Bus)
• 8-bit free-running timer with interrupt capability
• Watchdog timer for system reliability
• Power management with suspend/resume capabilities

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VCC): -0.5V to +7.0V
• Input Voltage: -0.5V to VCC + 0.5V
• Operating Temperature: 0°C to 70°C
• Storage Temperature: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage: 4.0V to 5.25V
• Operating Temperature: 0°C to 70°C
• Clock Frequency: 6 MHz (external)

USB Electrical Characteristics

• Low-speed driver meets USB 1.0 specifications
• Differential input sensitivity: 200mV minimum
• Single-ended receiver thresholds compliant with USB spec
• Integrated 1.5kΩ pull-up resistor on D+ line

Package Information

The CY7C63100 is available in several package options:

• 20-pin Packages:
  • PDIP (Plastic Dual In-line Package)
  • SOIC (Small Outline Integrated Circuit)
  • Windowed CerDIP (for development)
• 24-pin Packages:
  • SOIC (Small Outline Integrated Circuit)
  • QSOP (Quarter Size Outline Package)
  • Windowed CerDIP (for development)

Development Support

The CY7C63100 is supported by:

• Windowed packages for program development
• Industry-standard programmers
• USB protocol analyzers for debugging
• Reference designs for common applications