W78C32C_06 Datasheet, PDF (9/18 Pages) Winbond – 8-BIT MICROCONTROLLER

W78C32C/W78C032C
DC Characteristics, continued
PARAMETER
SYM.
TEST CONDITIONS
Input Low Voltage
XTAL1, RST ^(*3)
VIL2 VDD = 4.5V
Input High Voltage
P1, P3
VIH1 VDD = 5.5V
Input High Voltage
XTAL1, RST ^(*3)
VIH2 VDD = 5.5V
Notes:
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.
SPECIFICATION
MIN. TYP. MAX.
0
-
0.8
2.4
-
VDD
+0.2
3.5
-
VDD
+0.2
UNIT
V
V
V
6.3 A.C. Characteristics
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 (TCP), and actual parts will usually
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 Clock Input Waveform
XTAL1
T_CH
T_CL
F OP, TCP
PARAMETER
SYMBOL
MIN.
Operating Speed
FOP
0
Clock Period
TCP
25
Clock High
TCH
10
Clock Low
TCL
10
Notes:
1. The clock may be stopped indefinitely in either state.
2. The TCP specification is used as a reference in other specifications.
3. There are no duty cycle requirements on the XTAL1 input.
TYP.
-
-
-
-
MAX.
40
-
-
-
UNIT
MHz
nS
nS
nS
NOTES
1
2
3
3
Publication Release Date: December 4, 2006
-9-
Revision A6