M68HC16 Z SERIES
INTRODUCTION
USER’S MANUAL
1-1
SECTION 1
INTRODUCTION
M68HC16 Z-series microcontrollers (including the MC68HC16Z1, MC68CM16Z1,
MC68CK16Z1, MC68HC16Z2, MC68HC16Z3, MC68HC16Z4, and MC68CK16Z4)
are high-speed 16-bit control units that are upwardly code compatible with M68HC11
controllers. All are members of the M68HC16 Family of modular microcontrollers.
M68HC16 microcontroller units (MCUs) are built from standard modules that interface
via a common internal bus. Standardization facilitates rapid development of devices
tailored for specific applications.
M68HC16 Z-series MCUs incorporate a number of different modules. Refer to
for information on the contents of a specific Z-series MCU. (
X
) indicates that the
module is used in the MCU. All of these modules are interconnected by the intermod-
ule bus (IMB).
The maximum system clock for M68HC16 Z-series MCUs can be either 16.78 MHz,
20.97 MHz, or 25.17 MHz. An internal phase-locked loop circuit synthesizes the sys-
tem clock from a slow (typically 32.768 kHz) or fast (typically 4.194 MHz) reference, or
uses an external frequency source. Refer to
for information on which refer-
ence frequency is applied to a particular MCU. (
X
) indicates the reference frequency
applicable to the MCU.
Table 1-1 M68HC16 Z-Series MCUs
Modules
MC68HC16Z1
MC68CK16Z1
MC68CM16Z1
1
NOTES:
1. “C” designator indicates a 2.7V to 3.6V part; “M” indicates a fast reference frequency and “K” indicates a slow
reference frequency. “HC” stands for HCMOS.
MC68HC16Z2
MC68HC16Z3
MC68HC16Z4
MC68CK16Z4
Central Processor Unit (CPU16)
X
X
X
—
Low-Power Central Processor
Unit (CPU16L)
—
—
—
X
System Integration Module (SIM)
X
X
X
—
Low-Power System Integration
Module (SIML)
—
—
—
X
Standby RAM (SRAM)
1 Kbyte
2 Kbytes
4 Kbytes
1 Kbyte
Masked ROM Module (MRM)
—
8 Kbytes
8 Kbytes
—
Analog-to-Digital Converter (ADC)
X
X
X
X
Queued Serial Module (QSM)
X
X
X
—
Multichannel Communication
Interface (MCCI)
—
—
—
X
General-Purpose Timer (GPT)
X
X
X
X
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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