LPC2157_2158 NXP Semiconductors, LPC2157_2158 Datasheet - Page 38

• Manufacturer Part Number: LPC2157_2158
• Description: The LPC2157/2158 is a multi-chip module consisting of a LPC2138/2148 single-chipmicrocontroller combined with a PCF8576D Universal LCD driver in a low-cost 100-pinpackage
• Manufacturer: NXP Semiconductors

NXP Semiconductors
9. Dynamic characteristics
Table 9.
C
[1]
Table 10.
T
[1]
[2]
[3]
LPC2157_2158_2
Product data sheet
Symbol
t
t
t
V
t
t
t
t
t
t
Symbol
External clock
f
T
t
t
t
t
Port pins (P0[2], P0[3], P0[11], and P0[14])
t
t
I
t
r
f
FRFM
FEOPT
FDEOP
JR1
JR2
EOPR1
EOPR2
osc
CHCX
CLCX
CLCH
CHCL
r(o)
f(o)
2
f(o)
amb
L
cy(clk)
CRS
C-bus pins (P0[2], P0[3], P0[11], and P0[14])
= 50 pF; R
Characterized but not implemented as production test. Guaranteed by design.
Parameters are valid over operating temperature range unless otherwise specified.
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply voltages.
Bus capacitance C
= 40 C to +85 C for commercial applications, V
Dynamic characteristics of USB pins (full-speed)
Dynamic characteristics
pu
= 1.5 k on D+ to V
Parameter
oscillator frequency
clock cycle time
clock HIGH time
clock LOW time
clock rise time
clock fall time
output rise time
output fall time
output fall time
Parameter
rise time
fall time
differential rise and fall time
matching
output signal crossover voltage
source SE0 interval of EOP
source jitter for differential transition
to SE0 transition
receiver jitter to next transition
receiver jitter for paired transitions
EOP width at receiver
EOP width at receiver
b
in pF, from 10 pF to 400 pF.
DD
, unless otherwise specified.
Rev. 02 — 9 February 2009
DD
Conditions
V
Conditions
10 % to 90 %
10 % to 90 %
see
see
10 % to 90 %
must reject as
EOP; see
Figure 10
must accept as
EOP; see
Figure 10
(t
over specified ranges
IH
r
/t
to V
f
Figure 10
Figure 10
)
IL
Single-chip 16-bit/32-bit microcontrollers
Min
10
40
T
T
-
-
-
-
20 + 0.1
[1]
[1]
cy(clk)
cy(clk)
[1]
Min
4
4
90
1.3
160
40
82
2
18.5
9
0.4
0.4
C
b
[3]
LPC2157/2158
Typ
-
-
-
-
-
-
-
-
-
-
Typ
-
-
-
-
-
-
10
10
-
[2]
© NXP B.V. 2009. All rights reserved.
Max
20
20
110
2.0
175
+5
+18.5
+9
-
-
Max
25
100
-
-
5
5
-
-
-
Unit
ns
ns
%
V
ns
ns
ns
ns
ns
ns
38 of 45
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns