SPMCK16Z4MPV20 datasheet(36/500 Pages) FREESCALE

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OVERVIEW

M68HC16 Z SERIES

3-2

USER’S MANUAL

3.1.4 Masked ROM Module (MRM) — (MC68HC16Z2/Z3 Only)

• 8-Kbyte array, accessible as bytes or words

• User-selectable default base address

• User-selectable bootstrap ROM function

• User-selectable ROM verification code

3.1.5 Analog-to-Digital Converter (ADC)

• Eight channels, eight result registers

• Eight automated modes

• Three result alignment modes

3.1.6 Queued Serial Module (QSM)

• Enhanced serial communication interface

• Queued serial peripheral interface

• One 8-bit dual function port

3.1.7 Multichannel Communication Interface (MCCI) — (MC68HC16Z4/CKZ4 Only)

• Two channels of enhanced SCI (UART)

• One channel of SPI

3.1.8 General-Purpose Timer (GPT)

• Two 16-bit free-running counters with prescaler

• Three input capture channels

• Four output compare channels

• One input capture/output compare channel

• One pulse accumulator/event counter input

• Two pulse width modulation outputs

• Optional external clock input

3.2 Intermodule Bus

The intermodule bus (IMB) is a standardized bus developed to facilitate the design of

modular microcontrollers. It contains circuitry that supports exception processing, ad-

dress space partitioning, multiple interrupt levels, and vectored interrupts. The stan-

dardized modules in M68HC16 Z-series MCUs communicate with one another via the

IMB. Although the full IMB supports 24 address and 16 data lines, M68HC16 Z-series

MCUs use only 20 address lines. ADDR[23:20] follow the state of ADDR19.

3.3 System Block Diagram and Pin Assignment Diagrams

Figure 3-1 is a functional diagram of the MC68HC16Z1/CKZ1/CMZ1 MCU. Refer to

Figure 3-2 for a functional diagram of the MC68HC16Z2/Z3 MCU. Figure 3-3 is a

functional diagram of the MC68HC16Z4/CKZ4 MCU. Although diagram blocks repre-

sent the relative size of the physical modules, there is not a one-to-one correspon-

dence between location and size of blocks in the diagram and location and size of

integrated-circuit modules.

Freescale Semiconductor, Inc.

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