Rainbow-electronics DS89C450 Bedienungsanleitung PDF herunterladen (Seite 48)

DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers

Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim/Dallas Semiconductor product.

No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

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PACKAGE INFORMATION (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline

information, go to www.maxim-ic.com/DallasPackInfo.)

1 2 ... 43 44 45 46 47 48

DS89C430/DS89C440/DS89C450 1
ABSOLUTE MAXIMUM RATINGS 2
3 of 48 3
AC CHARACTERISTICS 4
Figure 2. Page Mode 1 Timing 8
Figure 3. Page Mode 2 Timing 8
Figure 4. Serial Port Timing 10
PIN DESCRIPTION 12
PIN DESCRIPTION (continued) 13
DETAILED DESCRIPTION 14
Terminology 15
Compatibility 15
Performance Overview 15
Instruction Set Summary 15
17 of 48 17
Table 2. SFR Reset Value 18
Memory Organization 19
Register Space 19
Memory Configuration 20
Program Memory Access 21
On-Chip Program Memory 22
Security Features 22
ROM Loader 25
On-Chip MOVX Data Memory 26
External Memory 27
RD or WR strobes 28
MOVX INSTA DATAA A 29
Table 7. Page Mode Select 30
Data Data 32
LSB Add LSB Add LSB Add 32
DataMSB Add 32
(PAGES1:PAGES0 = 00) 33
(PAGES1:PAGES0 = 01) 33
35 of 48 35
Interrupts 36
Interrupt Priority 37
Table 12. Interrupt Summary 37
Timer/Counters 38
Table 13. Timer Functions 38
Timed Access 38
System Clock-Divide Control 39
SELECTOR 40
Watchdog Timer 41
Internal System Reset 41
External/Hardware Reset 42
Reset Output 42
Power-Management Mode 42
Ring Oscillator 43
Idle Mode 43
SELECTOR GUIDE 44
PIN CONFIGURATIONS 45
REVISION HISTORY 45
PACKAGE INFORMATION 46

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