MC68HC11KW1 Datasheet, PDF (17/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

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INTRODUCTION
The MC68HC11KW1 8-bit microcontroller is a member of the M68HC11 family of HCMOS
microcontrollers. It has 640 bytes of EEPROM and 768 bytes of RAM. Making use of a 100-pin
TQFP package, a non-multiplexed expanded bus is a feature of this device. The main timer system
includes three input captures, four output compares and a software selectable input capture or
output compare. There are two additional 16-bit timers, each with three output compares and one
software selectable input capture or output compare. Other major features of this device are: a
10-channel, 10-bit resolution A/D converter, four PWM timer channels, an SPI (serial peripheral
interface) and an enhanced SCI (serial communications interface). In common with other family
members, the MC68HC11KW1 also includes an 8-bit pulse accumulator circuit, a real time
interrupt facility, and a computer operating properly watchdog system. This device is intended for
use in expanded memory applications.
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Features
• Low power, high performance M68HC11 CPU core with 4MHz internal bus frequency
• 768 bytes of RAM
• 640 bytes of byte-erasable EEPROM, with on-chip charge pump
• 448 bytes of boot ROM
• Up to 70 general purpose I/O lines, plus up to 10 input-only lines
• Non-multiplexed address and data buses, permitting direct access to the full 64K byte address
map
• Memory expansion unit, with six address extension lines, allowing up to (for example) sixteen
32K byte banks of external memory to be addressed in either of two bank windows
• Four external chip selects
• 16-bit timer with 3/4 input captures and 5/4 output compares; pulse accumulator and COP
watchdog timer
• Real-time interrupt circuit
MC68HC11KW1
INTRODUCTION
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