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Z8C520

Zilog.
Part Number Z8C520
Manufacturer Zilog.
Description 1.5 MBPS USB Device Controller
Published Apr 16, 2005
Detailed Description PRELIMINARY PRODUCT SPECIFICATION Z8E520/C520 1.5 MBPS USB LOW-POWER DEVICE CONTROLLER FOR MULTIPROTOCOL POINTING DEVIC...
Datasheet PDF File Z8C520 PDF File

Z8C520
Z8C520


Overview
PRELIMINARY PRODUCT SPECIFICATION Z8E520/C520 1.
5 MBPS USB LOW-POWER DEVICE CONTROLLER FOR MULTIPROTOCOL POINTING DEVICES FEATURES Part Number Z8E520 (OTP) Z8C520 (ROM) s s s 1 ROM (KB) 6 6 RAM (Bytes) 176 176 Speed (MHz) 12 12 s Software Programmable Timers Configurable as: – Two 8-Bit Standard Timers and One 16-Bit Standard Timer or – One 16-Bit Standard Timer and One 16-Bit Pulse Width Modulator (PWM) Timer Identical Masked ROM Version (Z8C520) On-Chip Oscillator that accepts a Ceramic Resonator or External Clock Hardware Support for PS/2, Serial, USB, and GeneralPurpose I/O (GPIO) Power Reduction Modes: – STOP Mode (functionality shut down except SMR) – HALT Mode (XTAL still running-peripherals active) USB SIE Compliant with USB Spec 1.
0 4.
0 VDC to 6.
0 VDC Operating Range @ 0°C to +70°C Six Vectored Interrupts with Fixed Priority Processor Speed Dividable by Firmware Control Operating Current: 5 mA typical in USB Mode; 2.
5 mA typical in Serial Mode (@ 3 MHz); 5 mA typical in PS/2 Mode 16 Total Input/Output Pins (Open-Drain/Push-Pull) Configurable 6 inputs with 3 level Programmable Reference Comparators 16-Bit Programmable Watch-Dog Timer (WDT) with Internal RC Oscillator s s s s s s s s s GENERAL DESCRIPTION Zilog’s Z8E520 (OTP) and Z8C520 (Masked ROM) microcontrollers are low-power Z8Plus MCUs, designed for the cost-effective implementation of USB and multiprotocol pointing devices.
For applications demanding powerful I/O capabilities, the Z8E520's input and output lines are grouped into two ports, and are configurable under software control to provide timing, status signals, or parallel I/O.
Both 8-bit and 16-bit timers, with a large number of user selectable modes, off-load the system of administering realtime tasks such as counting/timing and I/O data communications.
The microcontroller clock frequency is derived from the system clock by a programmable divider under firmware control.
The device is capable of functioning in four distinct, sele...


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