MC68HC908JK1 Datasheet, PDF (23/210 Pages) Motorola, Inc – MC68HC908JK1

General Description
MCU Block Diagram
• System protection features:
– Optional computer operating properly (COP) reset
– Optional low-voltage detection with reset and selectable trip
points for 3V and 5V operation.
– Illegal opcode detection with reset
– Illegal address detection with reset
• Master reset pin with internal pull-up and power-on reset
• IRQ1 with programmable pull-up and schmitt-trigger input
• 28-pin PDIP and 28-pin SOIC packages for MC68H(R)C908JL3
• 20-pin PDIP and 20-pin SOIC packages for
MC68H(R)C908JK3/JK1
Features of the CPU08 include the following:
• Enhanced HC05 programming model
• Extensive loop control functions
• 16 addressing modes (eight more than the HC05)
• 16-bit index register and stack pointer
• Memory-to-memory data transfers
• Fast 8 × 8 multiply instruction
• Fast 16/8 divide instruction
• Binary-coded decimal (BCD) instructions
• Optimization for controller applications
• Efficient C language support
1.4 MCU Block Diagram
Figure 1-1 shows the structure of the MC68H(R)C908JL3.
MC68H(R)C908JL3 — Rev. 1.0
MOTOROLA
General Description
Technical Data
23