STMicroelectronics ETL9345
The ETL9444/L9445 and ETL9344/L9345 SingleChip N-Channel Microcontrollers are fully compatible with the COPS® family, fabricated using N-channel, silicon gate XMOS technology. They are complete microcomputers containing all system timing, internal logic, ROM, RAM and I/O necessary to implement dedicated control functions in a variety of applications. The ETL9445 is identical to the ETL9444, except with 19 I/O lines instead of 23 : They are an appropriate choice for use in numerous human interface control environments.
| Part No. |
ETL9345 |
| Datasheet |
ETL9345
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| Manufacturer |
 STMicroelectronics |
| Description |
4-BIT NMOS MICROCONTROLLERS |
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DESCRIPTION
FEATURES
include single supply operation, a variety of output configuration options, with an instruction set, internal architecture and I/O scheme designed to facilitate keyboard input, display output and BCD data manipulation. Standard test procedures and reliable high-density fabrication techniques provide the medium to large volume customers with a customiMay 1989 1/27 ETL9444/9445–ETL9344/9345 zed controller oriented processor at a low end-product cost. Figure 1 : Block Diagram (28-pin version). The ETL9344/L9345 are exact functional equivalents, but extended temperature range versions of the ETL9444/L9445 respectively. 2/27 ETL9444/9445–ETL9344/9345 ETL9444/L9445 ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Voltage at any Pin Relative to GND Ambient Operating Temperature Ambient Storage Temperature Lead Temperature (soldering, 10 seconds) Power Dissipation Total Source Current Total Sink Current Value – 0.5 to + 10 0 to + 70 – 65 to + 150 300 0.75W at 25 °C 0.4W at 70 °C 120 120 mA mA Unit V °C °C °C Absolute maximum ratings indicate limits beyond which damage to the device may occur.
