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ST72T91L Datasheet 8-bit Mcu With 8/12/16/24/32k Rom

Manufacturer: STMicroelectronics

Overview: R ST7291L BRIEF DATA 8-BIT MCU WITH 8/12/16/24/32K ROM, TIMER, SUPPLY SUPERVISOR AND CARRIER FREQUENCY GENERATOR s s s s s s s s s s s s s s s s s s s s s s s 2 to 5.5V Supply Operating Range 8MHz Maximum Clock Frequency Fully Static Operation 0 to +70 °C Operating Temperature Range Run, Wait, Stop and RAM Retention modes User ROM: 12/16/24/ 32 Kbytes Data RAM: 256/384 bytes 28 pin SO Plastic Packages 21 Bidirectional I/O lines 8 standard Push-pull I/Os with wake-up feature 13 standard Push-pull I/Os 16-bit Timer with Output Compare (no output pin) Low Voltage Detector (LVD) Interrupt Wake-up function IR Carrier Frequency Generator 8-bit Data Manipulation 63 Basic Instructions 17 main Addressing Modes 8x8 Unsigned Multiply instruction True Bit Manipulation Complete Development Support on PC/DOS/ Windows 3.1x/95/NT with Real-Time Emulator Full Software Package (Cross -Assembler, Debugger) Full Hardware Emulator EPROM and OTP support PSO28 (See end of Datasheet for Ordering Information) Note 1. This device is in development, consult your SGS-TH OMSON representative for the current status. Figure 1.

General Description

V DD RESET WKP PA7 PA6 PA5 PA4 PA3 PA2 PA1 PC0 PA0 PB0 PB1 OSCin OSCout PC1/OP (1) PC6 PC7 VSS TEST PC5 PB7 PB6 PB5 PB4 PB3 PB2 DEVICE SUMMARY DEVICE ST7291L6 (1) ST7291L5 ST7291L5A ST7291L4 ST7291L3 ST7291L2 ROM (Bytes) RAM (Bytes) CARRIER GENERATOR Yes Yes Yes No No No 32K 24K 16K 16K 12K 8K 384 384 384 256 256 256 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Notes: 1.

PC1 on ST7291L2/L3/L4;

software selectable as OP on ST7291L6/L5/L5A December 1997 This is preliminary information ona new product in development orundergoing evaluation.

Key Features

  • an enhanced instruction set. Oscillator frequency may be as high as 8MHz, however, thanks to the fully static design, operation is possible down to DC. Under software control, the ST7291L may be placed in either WAIT or HALT modes, thus reducing power consumption. Figure 2. ST7291L Block Diagram The enhanced instruction set and addressing modes afford real programming potential. In addition to standard 8-bit data management, the ST7291L features bit manipulation, 8x8 unsigned multiplication and.

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