CY7C63001 USB Microcontroller Technical Summary

Overview

The CY7C63001 is an 8-bit RISC microcontroller with integrated USB 1.0 functionality, designed for low-speed USB peripheral applications. This cost-effective solution combines a USB serial interface engine with general-purpose I/O capabilities in a single chip, making it ideal for HID (Human Interface Device) applications such as mice, joysticks, and game controllers.

The microcontroller features a Harvard architecture with 35 USB-optimized instructions, operating at 12MHz internally while using a 6MHz external crystal or ceramic resonator. It includes integrated USB transceivers and supports the USB 1.5 Mbps low-speed specification.

Key Features

• USB Compliance:
  • Conforms to USB 1.5 Mbps Specification, Version 1.0
  • Compatible with USB HID Specification, Version 1.0
  • Supports 1 device address and 2 endpoints
• Microcontroller Core:
  • 8-bit RISC architecture with Harvard architecture
  • 6 MHz external clock with 12 MHz internal operation
  • 35 USB-optimized instructions
• Memory:
  • 128 bytes of RAM
  • 4K bytes of EPROM (CY7C63001A 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
• Additional 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

Applications

The CY7C63001 is particularly suited for USB human interface devices and other low-speed peripherals, including:

• Computer mice and trackballs
• Joysticks and game controllers
• Keyboards and keypads
• Simple data acquisition devices
• USB-to-serial converters
• Low-speed control interfaces

Functional Description

Memory Organization

The CY7C63001 features a Harvard architecture with separate program and data memory spaces:

• Program Memory: 4KB EPROM organized as 2048 x 16 bits
• Data Memory: 128 bytes of RAM
• Security: Includes a security fuse bit to protect program code

I/O Ports

The device features two general-purpose I/O ports:

• Port 0: 8 low-current I/O pins with Schmitt trigger inputs
• Port 1: 8 high-current I/O pins capable of driving LEDs
• All pins feature:
  • Programmable pull-up resistors
  • Interrupt capability
  • Controlled rise/fall times for reduced EMI

USB Engine

The integrated USB engine provides full low-speed USB functionality:

• Supports control (Endpoint 0) and interrupt (Endpoint 1) transfers
• Automatic handling of USB enumeration process
• Integrated USB transceiver with differential receiver and driver
• Compliant with USB electrical specifications

Timing and Interrupts

• 8-bit free-running timer with interrupt capability
• Watchdog timer for system reliability
• Multiple interrupt sources:
  • GPIO pin changes
  • USB events
  • Timer overflow
  • Wake-up events

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage: -0.5V to +6.0V
• Input Voltage: -0.5V to VDD+0.5V
• Operating Temperature: 0°C to +70°C
• Storage Temperature: -65°C to +150°C

Operating Conditions

• Supply Voltage: 4.0V to 5.25V
• Operating Temperature: 0°C to +70°C
• Clock Frequency: 6MHz ±0.25%

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 CY7C63001 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 Small Outline Package)
  • Windowed CerDIP (for development)

Ordering Information

The device is available in several variants:

• CY7C63000A: 2KB EPROM, 12 GPIO
• CY7C63001A: 4KB EPROM, 12 GPIO
• CY7C63100A: 2KB EPROM, 16 GPIO
• CY7C63101A: 4KB EPROM, 16 GPIO