LPC2212 Philips Semiconductors (Acquired by NXP), LPC2212 Datasheet - Page 31

• Manufacturer Part Number: LPC2212
• Description: 16/32-bit Arm Microcontrollers; 128/256 KB Isp/iap Flash With 10-bit ADC And External Memory Interfacebased on a 16/32 Bit ARM7TDMI-STM Cpu With Real-time Emulation And Embedded Trace Support, Together With 128/256 Kilobytes (kB) of Embedded High Spe
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
9. Dynamic characteristics
Table 12:
T
[1]
[2]
Table 13:
9397 750 12747
Preliminary data
Symbol
External Clock
f
t
t
t
t
t
Port Pins
t
t
I
t
Symbol
Common to Read and Write Cycles
t
t
t
t
Read Cycle Parameters
t
t
t
t
osc
C
CHCX
CLCX
CLCH
CHCL
RISE
FALL
2
f
CHAVR
CHCSL
CHCSH
CHANV
CSLAV
OELAVR
CSLOEL
AVDV
amb
C pins
Parameters are valid over operating temperature range unless otherwise specified.
Bus capacitance C
= 0 C to 70 C for commercial, 40 C to +85 C for industrial, V
Characteristics
External memory interface AC characteristics. C
Description
XCLK HIGH to Address Valid
XCLK HIGH to CS LOW
XCLK HIGH to CS HIGH
XCLK HIGH to Address Invalid
CS LOW to Address Valid
OE LOW to Address Valid
CS LOW to OE LOW
Memory Access Time (latest of Address
Valid, CS LOW, OE LOW to Data Valid)
Parameter
Oscillator frequency supplied by an
external oscillator (signal generator)
External clock frequency supplied by
an external crystal oscillator
External clock frequency if on-chip
PLL is used
External clock frequency if ISP is
used for initial code download
Oscillator clock period
Clock high time
Clock low time
Clock rise time
Clock fall time
Port output rise time (except P0.2,
P0.3)
Port output fall time (except P0.2,
P0.3)
Output fall time from V
b
in pF, from 10 pF to 400 pF.
IH
to V
IL
Rev. 01 — 02 February 2004
16/32-bit ARM microcontrollers with external memory interface
Conditions
Min
-
-
-
-
(t
5
5
5
CYC
L
[1]
[1]
= 25 pF. T
*(2 + WST1)) + ( 20) -
18
, V
amb
3
over specified ranges
= 40 C
LPC2212/LPC2214
Min
1
1
10
10
20
t
t
-
-
-
-
20 +
0.1
c
c
0.4
0.4
C
b
Max
10
10
10
10
10
10
5
[2]
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Typ
-
-
-
-
-
-
-
-
-
10
10
-
[1]
[1]
Max
50
30
25
25
1000
-
-
5
5
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Unit
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
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