MC68HC681P 데이터 시트보기 (PDF) - Motorola => Freescale
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MC68HC681P Datasheet PDF : 88 Pages
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TABLE OF CONTENTS (Continued)
Paragraph
Number
4.3.15.4
4.3.15.5
4.3.15.6
4.3.15.7
4.3.15.8
4.3.16
4.3.17
4.3.18
4.3.19
Title
Page
Number
Channel B Transmitter Ready — ISR[4]....................... 4-23
Counter/Timer Ready — ISR[3].................................... 4-23
Channel A Change in Break — ISR[2]. ........................ 4-23
Channel A Receiver Ready or FIFO Full — ISR[1]. ..... 4-23
Channel A Transmitter Ready — ISR[0]....................... 4-23
Interrupt Mask Register (IMR).................................................. 4-23
Count Registers (CUR and CLR) ............................................. 4-24
Counter/Timer Preload Registers (CTUR and CTLR).............. 4-24
Interrupt Vector Register (IVR)................................................. 4-24
5.1
5.2
5.3
5.4
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.5.5
5.5.6
5.5.7
5.5.8
5.5.9
Section 5
Electrical Specifications
Absolute Maximum Ratings ................................................................. 5-1
Thermal Characteristics ....................................................................... 5-1
Power Considerations .......................................................................... 5-1
DC Electrical Characteristics................................................................ 5-2
AC Electrical Characteristics................................................................ 5-3
Clock Timing .............................................................................. 5-3
RESET Timing ........................................................................... 5-4
Read and Write Bus Cycle Timing ............................................. 5-4
Interrupt Bus Cycle Timing......................................................... 5-5
Port Timing................................................................................. 5-7
Interrupt Reset Timing................................................................ 5-8
Transmitter Timing ..................................................................... 5-8
Receiver Timing ......................................................................... 5-9
Transmit And Receive Operation ............................................. 5-10
Section 6
Mechanical Data and Ordering Information
6.1
Pin Assignments .................................................................................. 6-1
6.2
Ordering Information ............................................................................ 6-1
6.3
Package Dimensions ........................................................................... 6-2
6.4
Pin Assignment–40 Pin Dual-In-Line Plastic Package.......................... 6-3
6.5
Ordering Information ............................................................................. 6-3
6.6
Package Dimensions–40 Pin Dual-In-Line Package............................. 6-4
viii
MC68HC681 USER’S MANUAL
MOTOROLA
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