ST52T400/T440/E440/T441
Subject to general operating conditions for VDD, fosc, and TA, unless otherwise specified.
Table 11.11 Output Voltage Levels
Symbol
Parameter
Conditions
Min Typ Max Unit
VOL1)
VOH2)
Output low level voltage for standard I/O
pin when 8 pins are sunk at same time.
Output high level voltage for standard I/
O pin when 8 pins are sourced at same
time.
VDD=5V, IIO=+8mA
VDD=5V, IIO=- 8mA
VDD-
0.5
VSS+
0.4
V
Notes:
1. The IIO current sunk must always respects the absolute maximum rating specified in Section 11.2 and the sum of IIO
(I/O ports and control pins) must not exceed IVSS
2. The IIO sourced current must always respect the absolute maximum rating specified in Section 11.2 and the sum of IIO
(I/O ports and control pins) must not exceed IVDD.
Figure 11.10 TTL-Level input Schmitt Trigger Figure 11.11 Port B pins CMOS-level input
5
4
Vo(V)
3
2
1
V = 5V
DD
TA= 25°C
(TYPICAL)
0
0.5 0.8 1.0 1.5 2.0 2.5
Vi (V)
5
4
Vo(V)
3
2
1
0
V = 5V
DD
TA= 25°C
(TYPICAL)
2.0
3.3
5.0
Vi (V)
81/94