MC68HC16Z1CEH16 Freescale Semiconductor, MC68HC16Z1CEH16 Datasheet - Page 63

• Manufacturer Part Number: MC68HC16Z1CEH16
• Description: IC MCU 16BIT 16MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: HC16r

Specifications of MC68HC16Z1CEH16

• Core Processor: CPU16
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Processor Series: HC16Z
• Core: CPU16
• Data Bus Width: 16 bit
• Controller Family/series: 68HC16
• No. Of I/o's: 26
• Ram Memory Size: 1KB
• Cpu Speed: 16MHz
• No. Of Timers: 2
• Embedded Interface Type: QSPI, SCI
• Rohs Compliant: Yes
• Package: 132PQFP
• Family Name: HC16
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3|5 V
• Number Of Programmable I/os: 16
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 11
• Data Ram Size: 1 KB
• Interface Type: SCI, SPI, UART
• Maximum Clock Frequency: 16 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.2.1 Accumulators
4.2.2 Index Registers
4.2.3 Stack Pointer
4.2.4 Program Counter
M68HC16 Z SERIES
USER’S MANUAL
The CPU16 has two 8-bit accumulators (A and B) and one 16-bit accumulator (E). In
addition, accumulators A and B can be concatenated into a second 16-bit double ac-
cumulator (D).
Accumulators A, B, and D are general-purpose registers that hold operands and re-
sults during mathematical and data manipulation operations.
Accumulator E, which can be used in the same way as accumulator D, also extends
CPU16 capabilities. It allows more data to be held within the CPU16 during operations,
simplifies 32-bit arithmetic and digital signal processing, and provides a practical 16-
bit accumulator offset indexed addressing mode.
The CPU16 has three 16-bit index registers (IX, IY, and IZ). Each index register has
an associated 4-bit extension field (XK, YK, and ZK).
Concatenated registers and extension fields provide 20-bit indexed addressing and
support data structure functions anywhere in the CPU16 address space.
IX and IY can perform the same operations as M68HC11 registers of the same names,
but the CPU16 instruction set provides additional indexed operations.
IZ can perform the same operations as IX and IY. IZ also provides an additional in-
dexed addressing capability that replaces M68HC11 direct addressing mode. Initial IZ
and ZK extension field values are included in the RESET exception vector, so that
ZK:IZ can be used as a direct page pointer out of reset.
The CPU16 stack pointer (SP) is 16 bits wide. An associated 4-bit extension field (SK)
provides 20-bit stack addressing.
Stack implementation in the CPU16 is from high to low memory. The stack grows
downward as it is filled. SK:SP are decremented each time data is pushed on the
stack, and incremented each time data is pulled from the stack.
SK:SP point to the next available stack address rather than to the address of the latest
stack entry. Although the stack pointer is normally incremented or decremented by
word address, it is possible to push and pull byte-sized data. Setting the stack pointer
to an odd value causes data misalignment, which reduces performance.
The CPU16 program counter (PC) is 16 bits wide. An associated 4-bit extension field
(PK) provides 20-bit program addressing.
CPU16 instructions are fetched from even word boundaries. Address line 0 always
has a value of zero during instruction fetches to ensure that instructions are fetched
from word-aligned addresses.
Freescale Semiconductor, Inc.
For More Information On This Product,
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Go to: www.freescale.com
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