p89v51rb2 NXP Semiconductors, p89v51rb2 Datasheet - Page 68

• 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
Table 64.
Table 65.
P89V51RB2_RC2_RD2_4
Product data sheet
Symbol
f
T
t
t
t
t
Symbol
T
t
t
t
t
osc
CHCX
CLCX
CLCH
CHCL
QVXH
XHQX
XHDX
XHDV
Fig 34. External clock drive waveform
cy(clk)
XLXL
External clock drive
Serial port timing
Parameter
oscillator frequency
clock cycle time
clock HIGH time
clock LOW time
clock rise time
clock fall time
Parameter
serial port clock cycle time
output data set-up to clock rising
edge time
output data hold after clock rising
edge time
input data hold after clock rising edge
time
input data valid to clock rising edge
time
V
DD
0.45 V
0.5 V
0.2V
0.2V
DD
DD
0.1 V
0.9 V
Rev. 04 — 1 May 2007
t
CHCL
Oscillator
40 MHz
Min
-
25
8.75
8.75
-
-
Oscillator
40 MHz
Min
0.3
117
0
0
-
t
Max
-
-
-
-
10
10
CLCX
Max
-
-
-
-
117
P89V51RB2/RC2/RD2
T
cy(clk)
8-bit microcontrollers with 80C51 core
t
CLCH
t
Variable
Min
12T
10T
2T
0
-
CHCX
cy(clk)
Variable
Min
0
-
0.35T
0.35T
-
-
cy(clk)
cy(clk)
cy(clk)
cy(clk)
50
133 -
002aaa907
Max
-
-
-
10T
Max
40
-
0.65T
0.65T
-
-
cy(clk)
© NXP B.V. 2007. All rights reserved.
cy(clk)
cy(clk)
133 ns
Unit
ns
ns
ns
Unit
MHz
ns
ns
ns
ns
ns
68 of 80
s