參數(shù)資料
型號(hào)： W78C33BF-40
廠商： WINBOND ELECTRONICS CORP
英文描述： TVS UNIDIRECT 600W 90V SMB
中文描述： 8位微控制器
文件頁(yè)數(shù)： 8/15頁(yè)
文件大?。?/td> 134K
代理商： W78C33BF-40
Preliminary W78C33B
- 8 -
DC Characteristics, continued
PARAMETER
SYM.
SPECIFICATION
MIN.
-
UNIT
TEST CONDITIONS
MAX.
0.45
Output Low Voltage
P0, ALE, PSEN [*3]
Sink Current
P1, P2, P3, P4
Sink Current
V
OL2
V
V
DD
= 4.5V
I
OL
= +4mA
I
SK1
4
8
mA
V
DD
= 4.5V
Vs = 0.45V
V
DD
= 4.5V
Vs = 0.45V
P0, ALE, PSEN
Output High Voltage
P1, P2, P3, P4
Output High Voltage
I
SK2
10
14
mA
V
OH1
2.4
-
V
V
DD
= 4.5V
I
OH
= -100
μ
A
V
DD
= 4.5V
I
OH
= -400
μ
A
P0, ALE, PSEN [*3]
Source Current
P1, P2, P3, P4
Source Current
V
OH2
2.4
-
V
I
SR1
-120
-180
μ
A
V
DD
= 4.5V
Vs = 2.4V
V
DD
= 4.5V
Vs = 2.4V
P0, ALE, PSEN
I
SR2
-10
-14
mA
Notes:
*1. RST pin is a Schmitt trigger input. RST has internal pull-low resistors of about 30 K
.
*3. P0, ALE and /PSEN are tested in the external access mode.
*4. XTAL1 is a CMOS input.
*5. Pins of P1, P2, P3, P4 can source a transition current when they are being externally driven from 1 to 0. The transition
current reaches its maximum value when V
IN
approximates to 2V.
AC 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 (T
CP
), and actual parts will
usually experience less than a
±
20 nS variation. The numbers below represent the performance
expected from a 1.2 micron CMOS process when using 2 and 4 mA output buffers.
Clock Input Waveform
T
T
XTAL1
F
CH
CL
OP,
T
CP
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