STPC STMicroelectronics, STPC Datasheet - Page 31

• Manufacturer Part Number: STPC
• Description: PC Compatible Embeded Microprocessor
• Manufacturer: STMicroelectronics

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4.4 DC Characteristics
Table 4-2. DC Characteristics
Recommended Operating conditions : VDD = 3.3V
Notes:
1. MHz ratings refer to CPU clock frequency.
2. Not 100% tested.
4.5 AC Characteristics
Table 4-4 through Table 4-9 list the AC character-
istics including output delays, input setup require-
ments, input hold requirements and output float
delays. These measurements are based on the
measurement points identified in Figure 4-1 . The
Table 4-3. Drive Level and Measurement Points for Switching Characteristics
Note: Refer to Figure 4-1.
Symbol Parameter
V
C
H
C
REF_D
V
V
P
V
V
C
V
I
AC
OUT
CLK
LK
CLK
OH
DD
DD
OL
IH
IL
IN
Operating Voltage
Supply Power
Internal Clock
DAC Voltage Reference
Output Low Voltage
Output High Voltage
Input Low Voltage
Input High Voltage
Input Leakage Current
Input Capacitance
Output Capacitance
Clock Capacitance
Symbol
V
V
V
REF
IHD
ILD
Test conditio ns
V
(Note 1)
I
I
Except XTALI
XTALI
Except XTALI
XTALI
Input, I/O
(Note 2)
(Note 2)
(Note 2)
Load
Load
DD
= 3.3V, H
=1.5 to 8mA depending of the pin
=-0.5 to -8mA depending of the pin
CLK
Value
Issue 1.2
1.5
3.0
0.0
= 66Mhz
0.3V, Tcase = 0 to 100
rising clock edge reference level VREF , and other
reference levels are shown in Table 4-3 below for
the STPC Consumer. Input or output signals must
cross these levels during testing.
Figure 4-1 shows output delay (A and B) and input
setup and hold times (C and D). Input setup and
hold times (C and D) are specified minimums, de-
fining the smallest acceptable sampling window a
synchronous input signal must be stable for cor-
rect operation.
ELECTRICAL SPECIFICATIONS
1.215
2.35
Min
-0.3
-0.3
3.0
2.4
2.1
-5
C unless otherwise specified
1.235
Typ
3.3
3.2
Units
V
V
V
V
V
1.255
DD
DD
Max
3.6
3.9
0.5
0.8
0.9
75
5
+0.3
+0.3
31/51
Unit
Mhz
pF
pF
pF
W
V
V
V
V
V
V
V
V
A