MC68HC705C8ACB Freescale Semiconductor, MC68HC705C8ACB Datasheet - Page 35
MC68HC705C8ACB
Manufacturer Part Number
MC68HC705C8ACB
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC705C8ACB.pdf
(222 pages)
Specifications of MC68HC705C8ACB
Cpu Family
HC05
Device Core Size
8b
Frequency (max)
2.1MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
8KB
Total Internal Ram Size
304Byte
# I/os (max)
24
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Through Hole
Pin Count
42
Package Type
SPDIP
Lead Free Status / Rohs Status
Not Compliant
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2.1 Contents
2.2 Introduction
2.3 Memory Map
MC68HC705C8A — Rev. 3
MOTOROLA
Technical Data — MC68HC705C8A
2.2
2.3
2.4
2.5
2.6
2.7
This section describes the organization of the on-chip memory.
The central processor unit (CPU) can address eight Kbytes of memory
and input/output (I/O) registers. The program counter typically advances
one address at a time through memory, reading the program instructions
and data. The programmable read-only memory (PROM) portion of
memory — either one-time programmable read-only memory
(OTPROM) or erasable, programmable read-only memory
(EPROM) — holds the program instructions, fixed data, user-defined
vectors, and interrupt service routines. The random-access memory
(RAM) portion of memory holds variable data.
I/O registers are memory-mapped so that the CPU can access their
locations in the same way that it accesses all other memory locations.
The shared stack area is used during processing of an interrupt or
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Input/Output (I/O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
EPROM/OTPROM (PROM) . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Bootloader ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
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Memory
Section 2. Memory
Technical Data
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