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Teilenummer | PCA84C846 |
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Beschreibung | Microcontrollers for TV tuning control and OSD applications | |
Hersteller | NXP Semiconductors | |
Logo | ||
Gesamt 30 Seiten INTEGRATED CIRCUITS
DATA SHEET
PCA84C646; PCA84C846
Microcontrollers for TV tuning
control and OSD applications
Preliminary specification
Supersedes data of June 1994
File under Integrated Circuits, IC14
1995 Jun 15
Philips Semiconductors
Microcontrollers for TV tuning
control and OSD applications
5 PINNING INFORMATION
5.1 Pinning
Preliminary specification
PCA84C646; PCA84C846
handbook, halfpage
VOB 1
42 V DD
VOW2 2
41 C
DP22/VOW1 3
DP23/VOW0 4
40 DP20/SDA
39 DP21/SCL
VSYNC 5
38 DP10/AFC0
HSYNC 6
37 DP11/AFC1
P10/DXWR 7
36 DP12/AFC2
P11/DXRD 8
35 INT/T0
DP13/TDAC 9
34 T1
P12/DXALE
T3
P14/DXINT
10 33
11 PCA84C646 32
PCA84C846
12 31
RESET
XTAL2
XTAL1
P00 13
30 TEST/EMU
P01 14
P02 15
29 DP00/PWM00
28 DP01/PWM01
P03 16
27 DP02/PWM02
P04 17
P05 18
26 DP03/PWM03
25 DP04/PWM04
P06 19
24 DP05/PWM05
P07 20
23 DP06/PWM06
V SS 21
22 DP07/PWM07
MED171
Fig.2 Pin configuration PCA84C646P and PCA84C846P (SDIP42; SOT270-1).
1995 Jun 15
6
6 Page Philips Semiconductors
Microcontrollers for TV tuning
control and OSD applications
Preliminary specification
PCA84C646; PCA84C846
CASE 1
t sub
t sub
t sub
CASE 2
VSTH VSTL
t sub
VSTH,VSTL is loaded into VSTREG
t sub
t sub
VSTH
VSTL
VSTH,VSTL is loaded into VSTREG
CASE 3
t sub
t sub
VSTL
VSTH,VSTL is loaded VSTH
into VSTREG
In CASE 1 and CASE 2, a new value for VSTH, VSTL is latched into VSTREG.
In CASE 3, VSTL, together with an old value of VSTH are latched into VSTREG.
Fig.7 Latching VSTH, VSTL into VSTREG.
t sub
MED180
handbook, full pagewidth
f xtal
3
127
3/fxtal
01
2
tsubn
m m+1 m+2
127 0
1
00
(1)
01
(1)
m
(1)
127
decimal value VSTH data latch
MGC573
(1) ts = -(---V----S-----T----Hf--x---t-+a---l-1----)----×-----3---
Fig.8 TDAC output (not inverted) with coarse adjustment only; VSTL = 1111111; P14LVL = 0.
1995 Jun 15
12
12 Page | ||
Seiten | Gesamt 30 Seiten | |
PDF Download | [ PCA84C846 Schematic.PDF ] |
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