w78c032c Winbond Electronics Corp America, w78c032c Datasheet - Page 9

• Manufacturer Part Number: w78c032c
• Description: 8-bit Mcu Series 80c51-based
• Manufacturer: Winbond Electronics Corp America

DC Characteristics, continued
Notes:
6.3
The AC specifications are a function of the particular process used to manufacture the part, the ratings
of the I/O buffers, the capacitive load, and the internal routing capacitance. Most of the specifications
can be expressed in terms of multiple input clock periods (T
experience less than a ±20 nS variation. The numbers below represent the performance expected
from a 0.5 micron CMOS process when using 2 and 4 mA output buffers.
6.3.1
Notes:
Input Low Voltage
XTAL1, RST
Input High Voltage
P1, P3
Input High Voltage
XTAL1, RST
Operating Speed
Clock Period
Clock High
Clock Low
1. P0 and P2 are in external access mode.
2. RST pin has an internal pull-down resistor of about 30K Ω.
3. XTAL1 is a CMOS input and RST is a Schmitt trigger input.
1. The clock may be stopped indefinitely in either state.
2. The T
3. There are no duty cycle requirements on the XTAL1 input.
PARAMETER
A.C. Characteristics
PARAMETER
Clock Input Waveform
CP
specification is used as a reference in other specifications.
(*3)
(*3)
XTAL1
SYM.
V
V
V
IH1
IH2
IL2
SYMBOL
F
T
T
T
V
V
V
OP
CP
CH
CL
DD
DD
DD
TEST CONDITIONS
= 4.5V
= 5.5V
= 5.5V
T
CH
- 9 -
MIN.
F
25
10
10
OP,
0
T
CP
Publication Release Date: December 4, 2006
W78C32C/W78C032C
TYP.
T
CL
-
-
-
-
MIN.
2.4
3.5
CP
0
SPECIFICATION
), and actual parts will usually
MAX.
40
-
-
-
TYP.
-
-
-
UNIT
MHz
nS
nS
nS
MAX.
+0.2
+0.2
V
V
0.8
DD
DD
Revision A6
NOTES
UNIT
1
2
3
3
V
V
V