TS87C52X2 ATMEL Corporation, TS87C52X2 Datasheet - Page 40

• Manufacturer Part Number: TS87C52X2
• Description: 8-bit Microcontroller 8 Kbytes Otp
• Manufacturer: ATMEL Corporation

Figure 16. I
Figure 17. Clock Signal Waveform for I
AC Parameters
Explanation of the AC
Symbols
40
TS8xCx2X2
CC
Test Condition, Power-down Mode
Reset = Vss after a high pulse
during at least 24 clock cycles
Each timing symbol has 5 characters. The first character is always a “T” (stands for
time). The other characters, depending on their positions, stand for the name of a signal
or the logical status of that signal. The following is a list of all the characters and what
they stand for.
Example:T
T
ranges.
T
-V ranges.
T
range.
T
range.
Table 24. gives the maximum applicable load capacitance for Port 0, Port 1, 2 and 3,
and ALE and PSEN signals. Timings will be guaranteed if these capacitances are
respected. Higher capacitance values can be used, but timings will then be degraded.
Table 24. Load Capacitance versus speed range, in pF
Table 5., Table 29. and Table 32. give the description of each AC symbols.
Table 27., Table 30. and Table 33. give for each range the AC parameter.
A
A
A
A
ALE / PSEN
T
Port 1, 2, 3
= 0 to +70°C (commercial temperature range); V
= -40°C to +85°C (industrial temperature range); V
= -40°C to +85°C (industrial temperature range); V
= 0 to +70°C (commercial temperature range); V
LLPL
Port 0
CC
= Time for ALE Low to PSEN Low.
Tests in Active and Idle Modes
V
CC
(NC)
AVLL
T
-0.5V
0.45V
CHCL
T
= Time for Address Valid to ALE Low.
CLCH
RST
XTAL2
XTAL1
V
= T
SS
CHCL
100
100
-M
80
V
EA
CC
= 5ns.
I
P0
CC
T
CLCH
V
CC
V
CC
0.7V
0.2V
CC
CC
-0.1
All other pins are disconnected.
-V
50
50
30
SS
SS
= 0 V; V
SS
SS
= 0 V; V
= 0 V; 2.7 V < V
= 0 V; 2.7 V < V
CC
CC
= 5V ± 10%; -M and -V
= 5V ± 10%; -M and
4184E–8051–09/02
100
100
-L
CC <
80
CC <
5.5V; -L
5.5V; -L