p87c51mc2 NXP Semiconductors, p87c51mc2 Datasheet - Page 21

• Manufacturer Part Number: p87c51mc2
• Description: 80c51 8-bit Microcontroller Family With Extended Memory
• Manufacturer: NXP Semiconductors

AC ELECTRICAL CHARACTERISTICS
T
2001 Apr 06
Philips Semiconductors
Data Memory
External Clock
SYMBOL FIGURE(S)
amb
t
80C51 8-bit microcontroller family with extended memory
64KB/96KB OTP with 2KB/3KB RAM
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AVDV1
t
AVWL1
t
t
t
t
t
t
t
t
WLWH
t
QVWX
WHQX
QVWH
f
t
t
t
t
t
AVIV1
RHDX
AVWL
WHLH
CHCX
t
RLRH
RLDV
RHDZ
AVDV
CLCX
CLCH
CHCL
CLCL
AVLL
LLAX
PLPH
PLAZ
LLDV
LLWL
RLAZ
LHLL
LLPL
PXIX
PXIZ
AVIV
OSC
LLIV
PLIV
= 0 to +70°C for commercial unless otherwise specified.
1,2,3, 4,5,6 Address valid to ALE low
1,2,3, 4,5,6 Address hold after ALE low
3,4, 5,6
3,4, 5,6
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
3,4
5,6
3,4
3,4
3,4
3,4
3,5
4,6
5,6
5,6
5,6
3,4
15
12
12
12
12
1
2
3
4
Oscillator frequency
CLock cycle
ALE pulse width
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 (A8-A15) to valid instruction
in (non-Extended Addressing Mode)
Address (A8-A15) to valid instruction
in (Extended Addressing Mode)
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 (A8-A15) to valid data in
(non-Extended Addressing Mode)
Address (A8-A15) to valid data in
(Extended Addressing Mode)
ALE low to RD or WR low
Address (A8-A15) valid to WR or RD
low (non-Extended Addressing
Mode)
Address (A8-A15) valid to WR or RD
low (Extended Addressing Mode)
Data valid to WR transition
Data hold after WR
Data valid to WR high
RD low to address float
RD or WR high to ALE high
High time
Low time
Rise time
Fall Time
PARAMETER
t
CLCL
3t
3t
+t
+t
2t
t
t
t
t
t
t
t
t
CHCX
CHCX
CHCX
CLCX
CLCX
CLCX
CLCX
CLCL
CLCL
CLCL
CLCL
CLCX
3t
CLCL
t
MIN
CLCL
-66
CLCL
33
33
Variable Clock
+t
0
0
0
-66
CHCX
-166
-166
-20
-25
-25
-25
-33
-24
-207
-24
-83
-15
2.7V < VDD < 5.5V
1,2,3
t
+t
t
2t
4t
+t
+t
+t
+t
+t
+t
CLCL
CLCL
t
t
t
CHCX
CHCX
CLCL
CLCX
CLCL
CLCL
CHCX
2t
CHCX
CHCX
2t
4t
CHCX
3t
CHCX
CLCX
21
MAX
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
12
16
0
-t
8
8
-t
4
CLCX
CHCX
-108
-25
-34
-250
+25
-141
+83
-91
-36
-44
-36
-44
f
OSC
MIN
151
83
16
50
83
83
63
75
33
33
8
8
8
0
0
0
9
9
=12MHz
MAX
180
346
255
208
58
25
89
16
58
49
83
75
50
50
8
0
8
8
4
t
+t
CLCL
3t
3t
+t
2t
t
t
t
t
t
t
t
t
CHCX
CLCX
CLCX
CLCX
CHCX
CHCX
CLCL
CLCL
CLCX
3t
CLCL
CLCL
CLCX
CLCL
t
P87C51MB2/P87C51MC2
MIN
CLCL
-33
CLCL
16
16
Variable Clock
+t
0
0
0
-33
-12
-12
CHCX
-25
-16
-103
-12
-11
-11
-83
-83
-20
-41
4.5V < VDD < 5.5V
t
t
4t
+t
+t
+t
+t
+t
+t
+t
CLCL
CLCL
2t
t
t
t
CHCX
CLCX
CLCL
CLCL
CLCX
CHCX
2t
CHCX
2t
CHCX
2t
CHCX
4t
CHCX
3t
CHCX
CLCL
t
t
MAX
CLCL
CLCL
24
CLCL
CLCL
CLCL
CLCL
CLCL
8
0
-t
-t
4
4
4
CHCX
-17
-125
+12
CLCX
-12
+41
-54
-46
-28
-34
-70
-28
-34
Preliminary specification
f
41.5
41.5
41.5
16.5
37.5
MIN
OSC
25
63
16
16
8
4
4
4
0
0
0
5
5
=24MHz
MAX
24.5
24.5
164
116
104
29
12
81
33
29
24
41
37
4
8
0
4
4
4
UNIT
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
ns
ns
ns
ns
ns