SyncMOS Technologies International, Inc.

SM89T16R1

8-Bits Micro-controller

With 64KB Flash ROM & 1KB RAM & Two UART & RTC & ADC & PWM embedded

Specifications subject to change without notice contact your sales representatives for the most recent information.

Ver 2.1 SM89T16R1 08/2006

11

9

Data valid to /WR transition

-5

ns

9

Data hold after /WR

ns

8

/RD LOW to address float

ns

8,9

/RD or /WR HIGH to ALE HIGH

0

10

ns

Notes:

M2

M1

M0

MOVX Cycles

0

0

0

2 machine cycles

0

0

0

1

3 machine cycles

0

1

0

4 machine cycles

0

1

1

5 machine cycles

1

0

0

6 machine cycles

1

0

1

7 machine cycles

1

1

0

8 machine cycles

1

1

1

9 machine cycles

Parameter

Figure

Symbol

Min

Typ

Max

Unit

Serial Port Clock Cycle Time

SM2=0,12 clocks per cycle

SM2=1,4 clocks per cycles

10

ns

ns

Output Data Setup to Clock Rising

SM2=0,12 clocks per cycle

SM2=1,4 clocks per cycles

10

ns

ns

Output Data Hold to Clock Rising

SM2=0,12 clocks per cycle

SM2=1,4 clocks per cycles

10

ns

ns

Input Data Hold to Clock Rising

SM2=0,12 clocks per cycle

SM2=1,4 clocks per cycles

10

ns

ns

Clock Rising Edge to Input Data Valid

SM2=0,12 clocks per cycle

SM2=1,4 clocks per cycles

10

ns

ns

Figure 4 External Clock Drive waveform

Figure 5 AC Testing Input/Output

Figure 6 AC Testing, Floating Waveform

Test Points

2.0V

0.8V

0.8V

2.0V

Notes:

AC inputs during testing are driven at 2.4V for logic “HIGH” and

0.45V for logic “LOW”. Timing measurements are at 2.0V for

logic “HIGH” and 0.8V for logic “LOW”

Floating

2.0V

0.8V

0.8V

2.0V

Notes:

The float state is define as the point which PORT 0 pins sinks

3.2mA or source 400

µA at the voltage test level.

0.8V