TSC80251A1

Features:

1 Kbyte of internal RAM
TSC83251A1: 24 Kbytes of on-chip masked ROM
TSC87251A1: 24 Kbytes of internal programmable ROM (OTP or UV erasable in window package)
TSC80251A1: ROMless version
External memory space (Code/Data): 256 Kbytes
Four 8bit parallel I/O Ports (Ports 0, 1, 2 and 3 of the standard 80C51)
Two 16bit Timers/Counters (Timers 0 and 1 of the standard 80C51)
Serial I/O Port : full duplex UART (80C51 compatible)
Three PMU: Pulse Measurement Unit for smart analog interface
  For each of the three modules:
  8bit prescaler
  8bit Timer for period and width measurements (duty cycle)
  The measurement can start either on the rising or on the falling edge
  One interrupt
  Only one port line is used
EWC: Event and Waveform Controller
  High-speed output
  Compare/Capture inputs
  PWM: Pulse Width Modulator
  Watchdog Timer capabilities
  Compatible with PCA: Programmable Counter Array (5 x 16bit modules)
8bit Analog to Digital Converter
  4 channels
  Conversion time: 600 clock periods (37.5 s at 16 MHz)
Power Management
  PowerOn reset (integrated on the chip)
  PowerOff flag (cold and warm resets)
  Power-Fail detector
  Power consumption reduction
  Software programmable system clock
  Idle and PowerDown modes
Power Supply: 5V ± 10%
Up to 16 MHz operation and three temperature ranges(*):
  Commercial (0 to 70°C)
  Industrial (40 to +85°C)
  Automotive (40 to +125°C)
Packages: PLCC44, CQPJ44 (window) and TQFP44(**)

*Please contact your sales office for availability of speed options
** Please contact your sales office for TQFP availability


Application

Typical applications for these products are CDROM, Card or Barcode readers, Monitors, Car Navigation Systems, Airbag and Brake Systems, as well as all kinds of Industrial Control and Measurement Equipment. With the high instruction throughput, the TSC80251A1 products are focussing on all highend 8bit to 16bit applications. They are also well suited to systems where a lower operating frequency is needed to reduce power consumption or Radio Frequency Interference (RFI), while maintaining a high level of CPUpower.


Pinout




Specifications

Ambient Temperature Under Bias
  Commercial  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to +70°C
  Industrial .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 to +85°C
  Automotive . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . .65 to +150°C
Voltage on EA#/VPP Pin to VSS . . . . . . . . . . . . . . .0 to +13.0 V
Voltage on any other Pin to VSS .  . . . . . . . . . . . .0.5 to +6.5 V
I_OLper I/O Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 mA
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . .1.5 W

Note:
Stresses at or above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions may affect device reliability.


Description

The TSC80251A1 products are derivatives of the TEMIC Application Specific Microcontroller family based on the extended 8bit C251 Architecture described below.

The TSC80251A1  family of products are tailored to Microcontroller applications requiring analog interface structures.

Three major peripheral blocks have been implemented to provide this facility to the designer:
Analog to Digital Converter: 4 inputs at 8bit resolution.
Pulse Measurement Unit (PMU): 3 modules used to interface to smart analog sensors.
Event and Waveform Controller (EWC): 5 programmable Counters e.g. for Pulse Width Modulation (PWM) or Compare/Capture functions.