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PC8532-1 View Datasheet(PDF) - NXP Semiconductors.

Part Name
Description
MFG CO.
PC8532-1
NXP
NXP Semiconductors. NXP
'PC8532-1' PDF : 44 Pages View PDF
NXP Semiconductors
PCF8532
Universal LCD driver for low multiplex rates
Table 15. Frame-frequency prescaler
Bit
Symbol Value
Description
Nominal frame frequency[1] Equation
7 to 4 -
11101
fixed value
3 to 0 F[2:0]
defines the division factor for the frame frequency
000
60 Hz
f fr = 68---40-- × -f-2--c-4--l-k-
001
65 Hz
f fr
=
6---4--
74
×
-f---c---l-k-
24
010
70 Hz
f fr
=
66---48--
×
-f---c---l-k-
24
011[2]
75 Hz
f fr = -f-2--c-4--l-k-
100
80 Hz
f fr = 66---40-- × -f-2--c-4--l-k-
101
85 Hz
f fr
=
65---46--
×
-f---c---l-k-
24
110
90 Hz
f fr
=
65---43--
×
-f---c---l-k-
24
111
75 Hz
f fr = -f-2--c-4--l-k-
[1] Nominal frame frequency calculated for an internal operating frequency of 1.800 kHz.
[2] Power-on and reset value.
7.18 Display controller
The display controller executes the commands identified by the command decoder. It
contains the status registers of the PCF8532 and co-ordinates their effects. The display
controller is also responsible for loading display data into the display RAM as required by
the filling order.
PCF8532_1
Product data sheet
Rev. 1 — 10 February 2009
© NXP B.V. 2009. All rights reserved.
25 of 44
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