MC68HC908BD48 Datasheet, PDF (27/290 Pages) Freescale Semiconductor, Inc – Microcontrollers

General Description
MCU Block Diagram
– 4 open-drain I/O pins for 42-pin and 44-pin packages
– 19 shared-function I/O pin for 28-pin package
– 2 open-drain I/O pins for 28-pin package
• System protection features:
– Optional computer operating properly (COP) reset
– Illegal opcode detection with reset
– Illegal address detection with reset
• FLASH memory security¹
• Master reset pin with internal pull-up and power-on reset
• IRQ with programmable pull-up and schmitt-trigger input
• 28-pin PDIP, 42-pin SDIP, and 44-pin QFP packages
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
• Third Party C Language Support
1.4 MCU Block Diagram
Figure 1-1 shows the structure of the MC68HC908BD48.
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
MC68HC908BD48 — Rev. 1.0
MOTOROLA
General Description
Technical Data
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