MC146805F2 MICROPROCESSOR Datasheet

MC146805F2 Datasheet PDF, Equivalent


Part Number

MC146805F2

Description

8-BIT MICROPROCESSOR

Manufacture

Motorola

Total Page 25 Pages
PDF Download
Download MC146805F2 Datasheet PDF


MC146805F2
® MOTOROLA
MC14680SF2
Advance Information
I
a-BIT MICROCOMPUTER UNIT
The MC146805F2 Microcomputer Unit (MCU) belongs to the
M146805 Family of Microcomputers. This 8-bit MCU contains on-chip
oscillator, CPU, RAM, ROM, I/O, and TIMER. The fully static design
allows operation at frequencies down to dc, further reducing its already
low-power consumption. It is a low-power processor designed for low-
end to mid-range applications in the consumer, automotive, industrial,
and communications markets where very low-power consumption con-
stitutes an important factor.
HARDWARE FEATURES
• Typical Full Speed Operating Power of 10 mW at 5 V
• Typical WAIT Mode Power of 3 mW
• Typical STOP Mode Power of 25 ,."W
• 8-Bit Architecture
• Fully Static Operation
• Single 3- to 6-Volt Supply
• 1089 Bytes of On-Chip User ROM
• 64 Bytes of On-Chip RAM
• Memory Mapped I/O
• 16 Bidirectional I/O Lines
• 4 Input-Only Lines
• Internal 8-Bit Timer with Software Programmable 7-Bit Prescaler
• External Timer Input
• External and Timer Interrupts
• Self-Check Mode
• Master Reset and Power-On Reset
• On-Chip Oscillator
• 1 ,."s Cycle Time
• 28-Pin Dual-In-Line Package
• Chip Carrier Also Available
SOFTWARE FEATURES
• Similar to the MC6800
• Efficient Use of Program Space
• Versatile Interrupt Handling
• True Bit Manipulation
• Ten Addressing Modes with Indexed Addressing for Tables
• Efficient Instruction Set
• Memory Mapped I/O
• User Callable Self-Check Routines
• Two Power Saving Standby Modes
USER SELECTABLE OPTIONS
• Crystal or Low-Cost Resistor Oscillator Option
• Oscillator Internally Divided by 2 or 4
• Interrupts Edge Sensitive Only or Level and Edge Sensitive
ThiS document contains Information on a new product Specifications and information herein
are subject to change without notice
CMOS
(HIGH-PERFORMANCE SILICON-GATE)
8-BIT
MICROCOMPUTER
P SUFFIX
PLASTIC PACKAGE
CASE 710
L SUFFIX
CERAMIC PACKAGE
CASE 719
S SUFFIX
CERDIP PACKAGE
CASE 733
Z SUFFIX
CHIP CARRIER
CASE 761
PIN ASSIGNMENT
VDD
TIMER
PCO
PCl
PC2
PC3
PBO
PBl
PB2
PB3
PB4
PB5
PB6
PB7
Chip carrier pin assignments are shown on the next
page.

MC146805F2
MC146805F2
PIN ASSIGNMENT (CONTINUED)
I~ I~* U :;;:
z zu (J) :::l
0
a:
:!ii *0
0
>
i=
0
U
U
0.. 0..
u
Z
NC*
OSC2
PAO
PA1
PA2
PA3
NC*
PA4
NC*
NC*
* NC= No Connection
U*z
LD
;;t=
«co r«---
0.. 0..
(J)
(J)
rr-o--
> 0..
croo LroD
0.. 0..
*'r<ot u
0.. Z
PC2
PC3
PBO
PB1
PB2
PB3
NC*
NC*
NC*
NC*
MCl46805F2 CMOS MICROCOMPUTER
IRQ
I
PAO
Port PAl
A PA2
1/0
lines
PA3
~~~
PA6
PA7
Port Data
A Direction
Register Register
Accumulator
8A
Index
Register
Condition
Code
Register
X
CC
Stack
POinter
S
Program
Counter
High PCH
Program
Counter
8 low PCl
CPU
CPU
Control
AlU
Self-Check
ROM
Data Port
Direction B
Register Register
PBO
PBl
PB2 Port
PB3 B
PB4 1/0
PB5 lines
PB6
PB7
3·911


Features ® MOTOROLA MC14680SF2 Advance Informa tion I a-BIT MICROCOMPUTER UNIT The M C146805F2 Microcomputer Unit (MCU) belo ngs to the M146805 Family of Microcompu ters. This 8-bit MCU contains on-chip o scillator, CPU, RAM, ROM, I/O, and TIME R. The fully static design allows opera tion at frequencies down to dc, further reducing its already low-power consump tion. It is a low-power processor desig ned for lowend to mid-range application s in the consumer, automotive, industri al, and communications markets where ve ry low-power consumption constitutes an important factor. HARDWARE FEATURES Typical Full Speed Operating Power of 10 mW at 5 V • Typical WAIT Mode Pow er of 3 mW • Typical STOP Mode Power of 25 ,."W • 8-Bit Architecture • F ully Static Operation • Single 3- to 6-Volt Supply • 1089 Bytes of On-Chip User ROM • 64 Bytes of On-Chip RAM Memory Mapped I/O • 16 Bidirection al I/O Lines • 4 Input-Only Lines • Internal 8-Bit Timer with Software Programmable 7-Bit Prescaler • External Timer Input .
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