LPC2220 PHILIPS [NXP Semiconductors], LPC2220 Datasheet - Page 38

• Manufacturer Part Number: LPC2220
• Description: 16/32-bit ARM microcontrollers; flashless with 64 kB, with 10-bit ADC and external memory interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 15:
9397 750 14061
Product data sheet
Access cycle
standard read
standard write
burst read - initial
burst read - subsequent 3
Standard read access specifications
Max frequency
f
f
f
f
MAX
MAX
MAX
MAX
------------------------------- -
t
--------------------------------- -
t
------------------------------- -
t
--------------------------------
t
RAM
WRITE
INIT
ROM
2
2
1
+
+
+
WST 1
WST 1
WST 2
+
+
+
1
+
20 ns
20 ns
20 ns
5 ns
16/32-bit ARM microcontrollers with external memory interface
Rev. 02— 30 May 2005
WST setting
WST
integer
N/A
WST 2
WST 1
WST 1
0; round up to
t
------------------------------------------- -
t
------------------------------- - 2
t
------------------------------- - 2
WRITE
RAM
INIT
t
t
CYC
CYC
+
+
t
CYC
–
20 ns
20 ns
t
CYC
–
–
+
5
Memory access time
requirement
t
t
t
t
RAM
WRITE
INIT
ROM
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
LPC2210/2220
t
t
t
CYC
CYC
CYC
t
CYC
–
20 ns
2
2
+
+
1
+
WST 1
WST 1
WST 2
–
–
20 ns
20 ns
–
38 of 49
5 ns