M69KB128AA datasheet(6/68 Pages) STMICROELECTRONICS

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M69KB128AA

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List of figures

Figure 1.

Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 2.

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 3.

Latency Configuration (Variable Latency mode, no Refresh collision) . . . . . . . . . . . . . . . . 25

Figure 4.

Latency Configuration (Fixed Latency mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 5.

Switching from Asynchronous to Synchronous Write operation . . . . . . . . . . . . . . . . . . . . . 26

Figure 6.

Refresh Collision during Synchronous Read Operation in Variable Latency mode . . . . . . 26

Figure 7.

Set Configuration Register (Software Method) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 8.

Read Configuration Register (Software Method) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 9.

WAIT Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 10.

WAIT Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 11.

AC Measurement I/O Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 12.

AC Input Transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 13.

AC Measurement Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 14.

Asynchronous Random Read AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 15.

Latch Enable Controlled, Asynchronous Random Read AC Waveforms . . . . . . . . . . . . . 44

Figure 16.

Asynchronous Page Read AC Waveforms (4 Words) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 17.

CR Controlled Configuration Register Read Followed by Read, Asynchronous Mode . . . 45

Figure 18.

Chip Enable Controlled, Asynchronous Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . 47

Figure 19.

Upper/Lower Byte Enable Controlled, Asynchronous Write AC Waveforms . . . . . . . . . . . 48

Figure 20.

Write Enable Controlled, Asynchronous Write AC Waveforms. . . . . . . . . . . . . . . . . . . . . . 49

Figure 21.

L Controlled, Asynchronous Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 22.

CR Controlled Configuration Register Program, Asynchronous Mode . . . . . . . . . . . . . . . . 51

Figure 23.

Clock input AC Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 24.

4-Word Synchronous Burst Read AC Waveforms (Variable Latency Mode) . . . . . . . . . . . 54

Figure 25.

Synchronous Burst Read Suspend and Resume AC Waveforms . . . . . . . . . . . . . . . . . . . 55

Figure 26.

Synchronous Burst Read Showing End-of-Row Condition AC Waveforms (No Wrap) . . . 56

Figure 27.

Burst Read Interrupted by Burst Read or Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . 57

Figure 28.

CR Controlled Configuration Register Read Followed by Read, Synchronous Mode . . . . 58

Figure 29.

4-Word Synchronous Burst Write AC Waveforms (Variable Latency Mode) . . . . . . . . . . . 60

Figure 30.

Synchronous Burst Write Showing End-of-Row Condition AC Waveforms (No Wrap) . . . 61

Figure 31.

Synchronous Burst Write Followed by Read AC Waveforms (4 Words) . . . . . . . . . . . . . . 62

Figure 32.

Burst Write Interrupted by Burst Write or Read AC Waveforms . . . . . . . . . . . . . . . . . . . . . 63

Figure 33.

CR Controlled Configuration Register Program, Synchronous Mode. . . . . . . . . . . . . . . . . 64

Figure 34.

Power-Up AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 35.

Deep Power-Down Entry and Exit AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

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