ICS9UMS9633BW Datasheet, PDF (8/18 Pages) Integrated Device Technology – ULTRA MOBILE PC CLOCK FOR AUTOMOTIVE USE

ICS9UMS9633BW
ULTRA MOBILE PC CLOCK FOR AUTOMOTIVE USE
Datasheet
Table 1: CPU Frequency Select Table
FSLC¹ FSLB¹
CPU
MHz
SRC
MHz
DOT
MHz
LCD REF
MHz MHz
0
0
133.33
0
1
166.67
100.00 96.00 100.00 14.318
1
0
100.00
1
1
66.67
1. FS_LC is a low-threshold input.Please see V_{IL_FS} and V_{IH_FS} specifications in
the Input/Supply/Common Output Parameters Table for correct values.
Also refer to the Test Clarification Table.
Table 2: LCD Spread Select Table (Pin 20/21)
B1b5 B1b4
B1b3
Spread
%
Comment
0
0
0
-0.5% LCD100
0
0
1
-1% LCD100
0
1
0
-2% LCD100
0
1
1
-2.5% LCD100
1
0
0 +/- 0.25% LCD100
1
0
1
+/-0.5% LCD100
1
1
0
+/-1% LCD100
1
1
1 +/-1.25% LCD100
Table 3: CPU N-step Programming
CPU
(MHz)
P ^{Default N}
(hex)
Fcpu
133.33 3
64
= 4MHz x N/P
166.67 3
7D
= 4MHz x N/P
100.00 4
64
= 4MHz x N/P
200.00 2
64
= 4MHz x N/P
CPU Power Management Table
PD CPU_STOP# ^{SMBus Register}
OE
0
1
Enable
1
X
Enable
0
0
Enable
0
X
Disable
CPU
Running
Low/20K
High
Low/20K
CPU#
Running
Low
Low
Low
SRC, LCD, DOT Power Management Table
SMBus Register
PD
CR_x#
OE
SRC SRC# DOT/LCD DOT#/LCD#
0
0
1
X
0
1
0
X
Enable
X
Enable
Disable
Running Running
Low/20K Low
Low/20K Low
Low/20K Low
Running
Low/20K
Running
Low/20K
Running
Low
Running
Low
REF Power Management Table
PD
SMBus Register
OE
REF
0
Enable
1
X
0
Disable
Running
Low
Low
IDT^TM/ICS^TM Ultra Mobile PC Clock for Automotive use
8
1425A—09/02/09