SyncMOS Technologies International, Inc.
ICC Active Mode Test Circuit:
V cc
SM894051
8-Bits Micro-controller
With 4KB Flash ROM embedded
Icc
VDD
11
SM 894051
XTAL2
XTAL1
RST
VSS
N C
C lo c k S ig n a l
V ss
AC Characteristic
VCC=3.3V±10%, VSS=0V, tclk min = 1/ fmax(maximum operating frequency)
TA= -40
℃
to +85
℃
Symbol
FIGURE
PARAMETER
External Clock drive into XTAL1
tCLK
4
tCLKH
4
tCLKL
4
tCLKR
4
tLLIV
4
tCYC
4
NOTES:
1. Operating at 25MHz.
Xtal1 Period
Xtal1 HIGH time
Xtal1 LOW time
XTAL1 rise time
XTAL1 fall time
Controller cycle time = tCLK / 12
40(Note1)
20
20
-
-
3.33
-
-
-
10
10
-
ns
ns
ns
ns
ns
ns
MIN
MAX
UNIT
Symbol
tXLXL
tQVXH
tXHQX
tXHDX
tXHDV
FIGURE
5
5
5
5
5
PARAMETER
UART
Serial port clock time
Output data setup to clock rising edge
Output data hold after clock rising edge
Input data hold after clock rising edge
Clock rising edge to input data valid
MIN
12tCLK
10tCLK-133
2tCLK-117
0
MAX
UNIT
ns
ns
ns
ns
ns
10tCLK-133
2.0V
0.8V
2.0V
Test Points
0.8V
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 4 AC Testing Input/Output
Specifications subject to change without notice contact your sales representatives for the most recent information.
SM894051 V1.4 09 /2006
7
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
