p89v51rb2 NXP Semiconductors, p89v51rb2 Datasheet - Page 65

• Manufacturer Part Number: p89v51rb2
• Description: 8-bit 80c51 5 V Low Power 16/32/64 Kb Flash Microcontroller With 1 Kb Ram
• Manufacturer: NXP Semiconductors

NXP Semiconductors
9. Dynamic characteristics
Table 63.
Over operating conditions: load capacitance for Port 0, ALE, and PSEN = 100 pF; load capacitance for all other
outputs = 80 pF
T
[1]
[2]
P89V51RB2_RC2_RD2_4
Product data sheet
Symbol
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
osc
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
PXAV
AVIV
PLAZ
RLRH
WLWH
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
WHQX
QVWH
RLAZ
WHLH
a
= 0 C to +70 C or 40 C to +85 C; V
T
Calculated values are for 6-clock mode only.
cy(clk)
= 1 / f
Parameter
oscillator frequency
ALE pulse width
address valid to ALE LOW time
address hold after ALE LOW time
ALE LOW to valid instruction in time
ALE LOW to PSEN LOW time
PSEN pulse width
PSEN LOW to valid instruction in time
input instruction hold after PSEN time
input instruction float after PSEN time
PSEN to address valid time
address to valid instruction in time
PSEN LOW to address float time
RD LOW pulse width
WR LOW pulse width
RD LOW to valid data in time
data hold after RD time
data float after RD time
ALE LOW to valid data in time
address to valid data in time
ALE LOW to RD or WR LOW time
address to RD or WR LOW time
data hold after WR time
data output valid to WR HIGH time
RD LOW to address float time
RD or WR HIGH to ALE HIGH time
Dynamic characteristics
osc
.
DD
= 4.5 V to 5.5 V; V
Rev. 04 — 1 May 2007
Conditions
X1 mode
X2 mode
IAP
SS
= 0 V
Min
0
0
0.25
2T
T
T
-
T
3T
-
0
-
T
-
-
6T
6T
-
0
-
-
-
3T
4T
T
7T
-
T
[1][2]
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
P89V51RB2/RC2/RD2
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
8-bit microcontrollers with 80C51 core
15
15
15
8
20
15
15
15
30
30
15
30
50
Typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max
40
20
40
-
-
-
4T
-
-
3T
-
T
-
5T
10
-
-
5T
-
2T
8T
9T
3T
-
-
-
0
T
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
cy(clk)
© NXP B.V. 2007. All rights reserved.
+ 15
+ 15
15
45
50
60
50
12
50
75
Unit
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
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