Datasheet

MCU Block Diagram
MC68HC908QY/QT Family Data Sheet, Rev. 6
Freescale Semiconductor 19
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
1.3 MCU Block Diagram
Figure 1-1 shows the structure of the MC68HC908QY4.
1.4 Pin Assignments
The MC68HC908QT4, MC68HC908QT2, and MC68HC908QT1 are available in 8-pin packages and the
MC68HC908QY4, MC68HC908QY2, and MC68HC908QY1 in 16-pin packages. Figure 1-2 shows the pin
assignment for these packages.