MC68HC11A4 MICROCOMPUTER Datasheet

MC68HC11A4 Datasheet PDF, Equivalent


Part Number

MC68HC11A4

Description

8-BIT MICROCOMPUTER

Manufacture

Motorola

Total Page 24 Pages
Datasheet
Download MC68HC11A4 Datasheet


MC68HC11A4
® MOTOROLA
MC68HCllA4
Product Preview
MC68HC11A4 8-BIT MICROCOMPUTER
The HCMOS MC68HC11A4 is an advanced microcomputer (MCU)
containing highly sophisticated on-chip peripheral functions. An im-
proved instruction set provides additional capability while maintaining
compatibility with the other members of the M6801 Family. The fully
static design allows operation at frequencies down to dc, further reduc-
ing its already low power consumption. Features available in addition to
the normal M6801 features include:
• 4K Bytes of ROM
• 512 Bytes of EEPROM
• 256 Bytes of RAM (All Saved During Standby)
• Enhanced 16-Bit Timer System
Four Stage Programmable Prescaler
Three Input Capture Functions
Five Output Compare Functions
• An 8-Bit Pulse Accumulator Circuit
• An Enhanced Non-Return-To-Zero Serial Communications
Interface (SCI)
• A New Serial Peripheral Interface
• Eight Channel 8-Bit AI D Converter
• A Real Time Interrupt Circuit
• A Computer Operating Properly (COP) Watchdog System
HCMOS
(HIGH-DENSITY HIGH-PERFORMANCE
SILICON GATE)
M ICROCOM PUTER
CERAMIC PACKAGE
Also Available In
52- Pin Quad Pack
PIN ASSIGNMENT
+5V
I
VDD
0 - XTAL
"L--- EXTAL
IRQ
-
MODA/LIR
MODBIVpp
STRB/R/W
STRA/AS
Port A
(3 in, 4 out, 1 1/0)
Port E
(4 or 8 Input)
,
VSS
.-L
Port B
(8 Output)
Port C
(8110)
Port D
(61/0)
This document contains Information on a product under development Motorola reserves the
right to change or discontinue this product without notice
3-599
I

MC68HC11A4
MC68HC11A4
FIGURE 1 - MC68HCllA4 BLOCK DIAGRAM
~tPulsePA7
PA6
PAl
OC2
Accumulator
COP
PA5 OC3
PA4 PortA I+--~ OC4
PA3
OC5 -Q...-O
OCl
Timer
System
PA2 ICl
PA1 IC2
PAD IC3
Periodic Interrupt
Mode
Control
ILlR)
MODA
IVpp)
MODB
I Port B ..----/
Address
Osc
Clock
Logic
XTAL
EXTAL
Bus CPU Core
Address!
Data
Interrupt
Logic
~r-0 0
~
C ill
0>
co c
..o.... 0,:
z~
c
0
SPI
SCI
Serial
Peripheral
Interface
RAM
EEPROM
ROM
A-D Converter
Serial
Communication
Interface
256
Bytes
512
Bytes
4K Bytes
lin ~
VRL VRH
Vss VDD
3-600


Features ® MOTOROLA MC68HCllA4 Product Preview MC68HC11A4 8-BIT MICROCOMPUTER The HCM OS MC68HC11A4 is an advanced microcompu ter (MCU) containing highly sophisticat ed on-chip peripheral functions. An imp roved instruction set provides addition al capability while maintaining compati bility with the other members of the M6 801 Family. The fully static design all ows operation at frequencies down to dc , further reducing its already low powe r consumption. Features available in ad dition to the normal M6801 features inc lude: • 4K Bytes of ROM • 512 Bytes of EEPROM • 256 Bytes of RAM (All Sa ved During Standby) • Enhanced 16-Bit Timer System Four Stage Programmable P rescaler Three Input Capture Functions Five Output Compare Functions • An 8- Bit Pulse Accumulator Circuit • An En hanced Non-Return-To-Zero Serial Commun ications Interface (SCI) • A New Seri al Peripheral Interface • Eight Chann el 8-Bit AI D Converter • A Real Time Interrupt Circuit • A Computer Operating Properly (COP) Watchdog System HCMOS (H.
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