PCF80C31-3A PHILIPS [NXP Semiconductors], PCF80C31-3A Datasheet - Page 13

• Manufacturer Part Number: PCF80C31-3A
• Description: CMOS single-chip 8-bit microcontrollers
• Manufacturer: PHILIPS [NXP Semiconductors]

1. Parameters are valid over operating temperature range unless otherwise specified.
2. Load capacitance for port 0, ALE, and PSEN = 100pF, load capacitance for all other outputs = 80pF.
3. For all Philips North America speed versions only.
4. Interfacing the 87C51 to devices with float times up to 50ns is permitted. This limited bus contention will not cause damage to port 0 drivers.
Philips Semiconductors
AC ELECTRICAL CHARACTERISTICS FOR SC87C51 12–33MHz PHILIPS NORTH AMERICA DEVICES
T
For SC87C51 (33MHz only) T
NOTES:
1996 Aug 16
amb
1/t
t
t
t
t
t
t
t
t
t
t
t
Data Memory
t
t
t
t
t
t
t
t
t
t
t
t
t
External Clock
t
t
t
t
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
AVIV
PLAZ
RLRH
WLWH
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
QVWX
WHQX
RLAZ
WHLH
CHCX
CLCX
CLCH
CHCL
SYMBOL
CMOS single-chip 8-bit microcontrollers
CLCL
= 0 C to +70 C or –40 C to +85 C, V
FIGURE
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
1
1
1
1
1
1
1
1
1
1
1
5
5
5
5
Oscillator frequency:
ALE pulse width
Address valid to ALE low
Address hold after ALE low
ALE low to valid instruction in
ALE low to PSEN low
PSEN pulse width
PSEN low to valid instruction in
Input instruction hold after PSEN
Input instruction float after PSEN
Address to valid instruction in
PSEN low to address float
RD pulse width
WR pulse width
RD low to valid data in
Data hold after RD
Data float after RD
ALE low to valid data in
Address to valid data in
ALE low to RD or WR low
Address valid to WR low or RD low
Data valid to WR transition
Data hold after WR
RD low to address float
RD or WR high to ALE high
High time
Low time
Rise time
Fall time
amb
SC87C51
= = 0 C to +70 C, V
CC
= 5V 10%, V
Speed Versions
CC
PARAMETER
= 5V 5%
C
G
P
Y
SS
= 0V (SC87C51 12, 16 and 24MHz versions);
13
6t
6t
2t
3t
3t
4t
t
t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
VARIABLE CLOCK
MIN
3.5
3.5
3.5
3.5
12
12
80C31/80C51/87C51
0
0
–13
–20
–13
–100
–100
–20
–20
–20
–40
–20
–50
–75
8t
9t
4t
3t
5t
5t
2t
3t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
MAX
12
16
24
33
10
20
20
0
–10
–150
–165
+25
3
–65
–45
–55
–90
–28
+50
Product specification
UNIT
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns