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IC BLOCK DIAGRAM & DESCRIPTION
Control Pin I/O Remarks
XIN
XOUT
XTIN
XTOUT
RESET
STOP/INTS
TEST
BOOT
P0
P5
P1
P3
P2
P6
P7
P8
P9
P4
PD
Input
Output
Input
Output
I/O
Input
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Resonator connecting pins (high-frequency)
Rf=1.2MΩ (typ.)
Ro=1.5kΩ (typ.)
R=1kΩ (typ.)
Resonator connecting pins (low-frequency)
Rf=6MΩ (typ.)
Ro=220kΩ (typ.)
R=1kΩ (typ.)
Sink open drain output. Hysteresis input.
Pull-up resistor.
R
IN=220kΩ (typ.)
R=1kΩ (typ.)
Hysteresis input.
R=1kΩ (typ.)
Pull-down resistor.
R
IN=70kΩ (typ.)
R=1kΩ (typ.)
Tr i-state I/O.
R=1kΩ (typ.)
Tr i-state I/O. Hysteresis input.
R=1kΩ (typ.)
Sink open drain output. Hysteresis input.
R=1kΩ (typ.)
Sink open drain output.
R=1kΩ (typ.)
Sink open drain
or
Segment output.
R=1kΩ (typ.)
Sink open drain or push-pull output.
P41 High current output. Hysteresis input.
Sink open drain output.
R=1kΩ (typ.)
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM3
COM2
COM1
COM0
VLC
PD0
PD1
PD2
VDD
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
VSS
BOOT
VAREF
P57(AIN7)
P56(AIN6)
P55(AIN5)
P54(AIN4)
P53(AIN3)
P52(AIN2)
P51(AIN1)
P50(AIN0)
P36
P35
P34
P33
P32
P31
P30
P17
P16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
VSS
XOUT
XIN
RESET
(XOUT)P22
(XIN)P21
TEST
(INTS/STOP)P20
(INT3/TC3)P40
(PMW/PDO)P41
(SCK1)P42
(SI1)P43
(SO1)P44
(SCK2)P45
(SI2)P46
(SO2)P47
P00
P01
P02
P03
P04
P05
P06
P07
(INT0)P10
(INT1)P11
(INT2/TC1)P12
(DVO)P13
(PPG)P14
(TC2)P15
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
SEG11
SEG12/P93
SEG13/P92
SEG14/P91
SEG15/P90
SEG16/P67
SEG17/P66
SEG18/P65
SEG19/P64
SEG20/P63
SEG21/P62
SEG22/P61
SEG23/P60
SEG24/P77
SEG25/P76
SEG26/P75
SEG27/P74
SEG28/P73
SEG29/P72
SEG30/P71
SEG31/P70
SEG32/P87
SEG33/P86
SEG34/P85
SEG35/P84
SEG36/P83
SEG37/P82
SEG38/P81
SEG39/P80
VDD
IC651 TMP87EP26F-4K76 (Micro Controller)
IC597 TDA8921TH (Class-D Power Amplifier)
9
3
10
1
12
18
23
14
17
19
24
20
13
15
16
8
11
2
7
6
4
22
21
5
VSSP1
V
SSP2
mute
mute
INPUT
STAGE
PWM
MODULATOR
CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
INPUT
STAGE
PWM
MODULATOR
CONTROL
AND
HANDSHAKE
DRIVER
LOW
DRIVER
HIGH
RELEASE2
SWITCH2
ENABLE2
MODE
OSCILLATOR
MANAGER
TEMPERATURE SENSOR
CURRENT PROTECTION
STABI
V
SSP1VSSA1VSSA2VSSD HW VSSP2
BOOT1
BOOT2
OUT1
OUT2
IN1-
IN1+
SGND1
SGND2
IN2+
IN2-
OSC
MODE
124
2
23
3
22
4
21
520
6
19
7
18
8
17
9
16
10
15
11
14
1213
V
DDA
2
V
DDA
1
V
DDP
1
V
DDP
2
PROT
STABI
V
SSP
1
V
SSA
1
V
SSA
2V
SSD
HW
V
SSP
2
BOOT1
BOOT2
OUT1
OUT2
IN1-
IN1+
SGND1
SGND2
IN2+
IN2-
OSC
MODE
TDA8921TH
VSSA2
SGND2
VDDA2
IN2-
IN2+
MODE
OSC
IN1+
IN1-
VDDA1
SGND1
VSSA1
1
2
3
4
5
6
7
8
9
10
11
12
negative analog supply voltage for channel 2
signal ground for channel 2
positive analog supply voltage for channel 2
negative audio channel 2 input
positive audio channel 2 input
mode select input : (standby, mute or operationg)
oscillator frequency adjustment or tracking input
positive audio channel 1 input
negative audio channel 1 input
positive analog supply voltage for channel 1
signal ground for channel 1
negative analog supply voltage for channel 1
SYMBOL PIN DESCRIPTION
PROT
VDDP1
BOOT1
OUT1
VSSP1
STABI
HW
VSSP2
OUT2
BOOT2
VDDP2
VSSD
13
14
15
16
17
18
19
20
21
22
23
24
time constant capacitor for protection delay
positive power supply voltage for channel 1
bootstrap capacitor for channel 1
channel 1 PWM output
negative power supply voltage for channel 1
decouping capacitor of internal stabilizer for logic supply
handle wafer ; must be connected to VSSD
negative power supply voltage for channel 2
channel 2 PWM output
bootstrap capacitor for channel 2
positive power supply voltage for channel 2
negative digital supply voltage
SYMBOL PIN DESCRIPTION
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