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SAA1305T/N1,112

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
2004 Jan 15 19
Philips Semiconductors Product specification
On/off logic IC SAA1305T
APPLICATION CIRCUITS
Fig.10 Application circuit for crystal oscillator.
(1) Crystal oscillator type MU206S (32.768 kHz).
h
andbook, full pagewidth
MGR204
R5
1 kΩ
R2
20 kΩ
R1
33 kΩ
R3
25 kΩ
C2
15 pF
1
2
3
4
5
6
7
8
24
23
9
12
11
18
20
10
21
C1
15 pF
16
(1)
17 14 15 131922
input D4
R4
1 kΩ
V
DD
input D7
SAA1305T
Fig.11 Application circuit for RC oscillator.
handbook, full pagewidth
MGR205
R5
1 kΩ
R2
20 kΩ
R1
33 kΩ
R3
25 kΩ
1
2
3
4
5
6
7
8
24
23
9
12
11
18
20
10
21
C
osc
300 pF
16 17 14 15 131922
input D4
R4
4.7 kΩ
V
DD
input D7
R
osc
90 kΩ
SAA1305T
2004 Jan 15 20
Philips Semiconductors Product specification
On/off logic IC SAA1305T
ON/OFF LOGIC WITH MICROCONTROLLER IN POWER-DOWN STATE
Fig.12 Block diagram with continuous microcontroller supply.
handbook, full pagewidth
MGR206
5 V
CONTINUOUS
REGULATOR
SAA1305T
ON/OFF
RES
5 V
14 V
WD
RP
MICRO-
CONTROLLER
SDA
SCL
9
10
D0 to D7
1 to 8
11
24
23
21
20
18
CHI
Fig.13 Timing diagrams with continuous microcontroller supply.
(1) Level not defined.
a. First power-on. b. Normal switch-on.
handbook, full pagewidth
MGR207
ON/OFF
RES
CHI
14 V
RP
WD
ON/OFF
Dx
CHI
RP
WD
(1) (1)
2004 Jan 15 21
Philips Semiconductors Product specification
On/off logic IC SAA1305T
Scenarios for ON/OFF logic with microcontroller in power-down state
Fig.14 Proper first connection on power supply.
handbook, full pagewidth
MGR208
RES = LOW RP = HIGH
RES = HIGH
5 V continuous
regulator
SAA1305T microcontroller
RP = LOW
CHI = LOW
ON/OFF = HIGH (A/D supply)
I
2
C-bus write reset time/blink/LED status
I
2
C-bus read status/old/new register
I
2
C-bus write ENABLE-RESET
CHI = HIGH
220 ms (hardware specific)
20 ms
Fig.15 Switch-on after a valid input change.
handbook, full pagewidth
MGR209
Dx RP = HIGH
RP = LOW
SAA1305T main supplymicrocontroller
POWER-ON
WD = LOW
WD = LOW
WD = HIGH
CHI = LOW
ON/OFF = HIGH
I
2
C-bus read status/old/new register
CHI = HIGH
1 ms
250 ms
250 ms
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

SAA1305T/N1,112

Mfr. #:
Buy SAA1305T/N1,112
Manufacturer:
NXP Semiconductors
Description:
Encoders, Decoders, Multiplexers & Demultiplexers ANALOG AUDIO MISC
Lifecycle:
New from this manufacturer.
Delivery:
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