STV9425-STV9425B データシートの表示（PDF） - STMicroelectronics
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STV9425-STV9425B Datasheet PDF : 15 Pages
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STV9425 - STV9425B - STV9426
FUNCTIONAL DESCRIPTION (continued)
PULSE WIDTH MODULATOR 0
3FF8 V07 V06 V05 V04 V03 V02 V01 V00
*
00000000
V0[7:0] : Digital value of the 1st PWM D to A
converter (Pin1).
PULSE WIDTH MODULATOR 1
3FF9 V17 V16 V15 V14 V13 V12 V11 V10
*
00000000
V1[7:0] : Digital value of the 2nd PWMDAC (Pin2).
PULSE WIDTH MODULATOR 2
3FFA V27 V26 V25 V24 V23 V22 V21 V20
*
00000000
V2[7:0] : Digital value of the 3rd PWM DAC
(Pin11).
PULSE WIDTH MODULATOR 3
3FFB V37 V36 V35 V34 V33 V32 V31 V30
*
00000000
V3[7:0] : Digital value of the 4th PWM DAC
(Pin12).
PULSE WIDTH MODULATOR 4
3FFC V47 V46 V45 V44 V43 V42 V41 V40
*
00000000
V4[7:0] : Digital value of the 5th PWM DAC
(Pin13).
PULSE WIDTH MODULATOR 5
3FFD V57 V56 V55 V54 V53 V52 V51 V50
*
00000000
V5[7:0] : Digital value of the 6th PWM DAC
(Pin14).
PULSE WIDTH MODULATOR 6
3FFE V67 V66 V65 V64 V63 V62 V61 V60
*
00000000
V6[7:0] : Digital value of the 7th PWM DAC
(Pin23).
PULSE WIDTH MODULATOR 7
3FFF V77 V76 V75 V74 V73 V72 V71 V70
*
00000000
V7[7:0] : Digital value of the 8th PWM DAC
(Pin24).
Note : * is power on reset value.
II - Descriptors
SPACING
MSB 0 - - - - - - -
LSB SL7 SL6 SL5 SL4 SL3 SL2 SL1 SL0
SL[7:0] : The number of the scan lines of the
spacing strip (1 to 255).
CHARACTER
MSB 1 DE - ZY -
- C9 C8
LSB C7 C6 C5 C4 C3 C2 C1 0
C[9:0] : The address of the first character code of
the strip (even).
DE : Display enable :
- DE = 0, R = G = B = 0 and FBLK = FBK
(display control register) on whole strip,
- DE = 1, display of the characters.
ZY : Zoom, ZY = 1 all the scan lines are
repeated once.
III - Code Format
MSB SET
CHARACTER NUMBER
LSB BK3 BK2 BK1 BK0 FL RF GF BF
SET
: The set CHARACTER NUMBER
- If SET = 0 : ROM character,
- If SET = 1 :
• If CHARACTER NUMBER is 0 to
25, a user redefinable character
(UDC) located in RAM at the
address equal to :
38 x CHARACTER NUMBER,
• If CHARACTER NUMBER is 26 to
63, space character,
• If CHARACTER NUMBER>63, end
of line.
FL
: Flashing attribute (the flashing mode
is defined in the DISPLAY CONTROL
register).
RF, GF, BF: Foreground color.
BK[3:0] : Background :
- If BK3 = 0, BK[2:0] = background
color R, G and B,
- If BK3 = 1, shadowing :
BK1 : horizontal shadowing.
(if BK1 = 0, the background is
transparent).
BK2 and BK0 must be equal to 0.
8/15
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