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EM6621 Datasheet(PDF) 5 Page - EM Microelectronic - MARIN SA

Part No. EM6621
Description  Ultra Low Power Microcontroller with 4x20 LCD Driver
Download  69 Pages
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Maker  EMMICRO [EM Microelectronic - MARIN SA]
Homepage  http://www.emmicroelectronic.com
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EM6621 Datasheet(HTML) 5 Page - EM Microelectronic - MARIN SA

 
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EM6621
03/02 REV. D/444
Copyright
 2002, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
Chip
TQFP
52
DIL
64
Signal Name
Function
Remarks
35
35
51
PB[1]
Input/output, open drain
port B terminal 1
Port B data[1] I/O or
Ck[11] output
36
36
52
PB[2]
Input/output, open drain
port B terminal 2
Port B data[2] I/O or
Ck[16] output
37
37
53
PB[3]
Input/output, open drain
port B terminal 3
Port B data[3] I/O or
PWM output
38
38
54
PA[0]
Input port A terminal 0
TestVar 1
Event counter
39
39
55
PA[1]
Input port A terminal 1
TestVar 2
40
40
58
PA[2]
Input port A terminal 2
TestVar 3
41
41
59
PA[3]
Input port A terminal 3
Event counter,
MSC start/stop control
42
42
60
Buzzer
Output Buzzer terminal
43
43
61
Strobe
Output Strobe terminal
µP reset state or/and port B write
or sleep flag out
44
44
62
Vbat = VDD
Positive power supply
MFP Connection
45
45
63
Vreg
Internal voltage regulator
Connect to minimum 100nF,
MFP connection
46
46
64
Qin/Osc1
Crystal terminal 1
32 KHz crystal, MFP connection
47
47
2
Qout /Osc2
Crystal terminal 2
32 KHz crystal, MFP connection
48
48
3
VSS
Negative power supply
ref. terminal, MFP connection
49
49
4
C2B
Voltage multiplier
Not needed if ext. supply
50
50
5
C2A
Voltage multiplier
Not needed if ext. supply
51
51
6
C1B
Voltage multiplier
Not needed if ext. supply
52
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
Crys ta l
L CD D is p la y
C1
C1
C1
C4
C3
Vre g
V SS
Te s t
Re s e t
V DD (V bat)
SE G [20 :1 ]
Q in
O out
C2
C2
C1 A
C1 B
C2 A
C2 B
C O M [4:1]
VL 1
VL 2
VL 3
E M 6621
A ll C apacitors 100nF
Port A
S trobe
Bu z ze r
Po rt B
Po rt S P


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