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參數(shù)資料
| 型號： | EM6821TQ52B |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-EPSOIC |
| 中文描述： | 微控制器 |
| 文件頁數(shù)： | 45/69頁 |
| 文件大?。?/td> | 852K |
| 代理商： | EM6821TQ52B |
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EM6821
10/01, Revision A/386
Copyright
2001, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
Chip
TQFP
52
DIL
64
Signal Name
Function
Remarks
35
51
PB[1]
Input/output, open drain
port B terminal 1
Port B data[1] I/O or
Ck[11] output
36
52
PB[2]
Input/output, open drain
port B terminal 2
Port B data[2] I/O or
Ck[16] output
37
53
PB[3]
Input/output, open drain
port B terminal 3
Port B data[3] I/O or
PWM output
38
54
PA[0]
Input port A terminal 0
TestVar 1
Event counter
39
55
PA[1]
Input port A terminal 1
TestVar 2
40
58
PA[2]
Input port A terminal 2
TestVar 3
41
59
PA[3]
Input port A terminal 3
Event counter,
MSC start/stop control
42
60
Buzzer
Output Buzzer terminal
43
61
Strobe
Output Strobe terminal
P reset state or/and port B write
or sleep flag out
44
62
Vbat = VDD
Positive power supply
MFP Connection
45
63
Vreg
Internal voltage regulator
Connect to minimum 100nF,
MFP connection
46
64
Qin/Osc1
Crystal terminal 1
32 KHz crystal, MFP connection
47
2
Qout /Osc2
Crystal terminal 2
32 KHz crystal, MFP connection
48
3
VSS
Negative power supply
ref. terminal, MFP connection
49
4
C2B
Voltage multiplier
Not needed if ext. supply
50
5
C2A
Voltage multiplier
Not needed if ext. supply
51
6
C1B
Voltage multiplier
Not needed if ext. supply
52
7
C1A
Voltage multiplier
Not needed if ext. supply
Gray shaded areas : Terminals needed for MFP programming connections (VDD, Vreg, Qin, Qout, Test).
Figure 3. Typical Configuration
Crysta l
LC D Disp lay
C1
C4
C3
Vre g
V SS
Test
Rese t
V DD (V bat)
SE G [20:1]
Q in
O out
C2
C1 A
C1 B
C2 A
C2 B
C O M [4:1]
VL1
VL2
VL3
E M 6821
A ll C apa citors 100nF
Port A
Stro be
B u zze r
Port B
Port S P
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