M69KB128AA datasheet(39/68 Pages) STMICROELECTRONICS

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M69KB128AA

9 DC and AC parameters

39/68

DC and AC parameters

This section summarizes the operating measurement conditions, and the DC and AC

characteristics of the device. The parameters in the DC and AC characteristics Tables that

follow, are derived from tests performed under the Measurement Conditions summarized in

Table 14: Operating and AC Measurement Conditions. Designers should check that the

operating conditions in their circuit match the operating conditions when relying on the quoted

parameters.

Table 14.

Operating and AC Measurement Conditions

Figure 11. AC Measurement I/O Waveform

Logic states ‘1’ and ‘0’ correspond to AC test inputs driven at VCCQ and VSS respectively. Input timings begin at

VCCQ/2 and output timings end at VCCQ/2.

Figure 12. AC Input Transitions

Parameter(1)

All voltages are referenced to VSS.

M69KB128AA

Unit

Min

Max

VCC Supply Voltage

1.7

1.95

VCCQ Input/Output Buffer Supply Voltage

1.7

1.95

Load Capacitance (CL)

Output Circuit Protection Resistance (R)

Ω

Input Pulse Voltages(2)

VCC=VCCQ

VCC

Input and Output Timing Ref. Voltages(2)

VCC/2

Input Rise Time tr and Fall Time tf

(2)(3)

Referenced to VSS.

1V/ns

AI09484c

VCCQ

I/O Timing Reference Voltage

VSSQ

VCCQ/2

90%

10%

90%

10%

VCCTyp

VSS

ai10122

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