SyncMOS Technologies International, Inc.
t
CLKH
V
IH1
0.8V
t
CLKL
t
CLK
Figure 4 External Clock Drive waveform
SM89S16R1
8-Bits Micro-controller
With 64KB Flash ROM & 1KB RAM & RTC & ADC & PWM & PDWU embedded
t
CLKR
t
LLIV
2.0V
0.8V
Test Points
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
Figure 5 AC Testing Input/Output
Floating
2.0V
0.8V
2.0V
0.8V
Notes:
The float state is define as the point which PORT 0
pins sinks 3.2mA or source 400µA at the voltage
test level.
Figure 6 AC Testing, Floating Waveform
t
LHLL
ALE
t
LLPL
t
AVLL
/PSEN
t
PLAZ
t
LLAX
t
LLIV
PORT0
PORT2
A8-A15
A0-A7
t
AVIV
A8-A15
A8-A15
INSTR IN
t
PXIZ
t
PXIX
A0-A7
t
PLIV
t
PLPH
Figure 7 External Program Memory Read Cycle
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89S16R1 08/2006
11
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
