em6521 EM Microelectronic, em6521 Datasheet - Page 5

• Manufacturer Part Number: em6521
• Description: Mfp Version Of Em6621 Ultra Low Power Microcontroller With 4x20 Lcd Driver
• Manufacturer: EM Microelectronic

Gray shaded areas : Terminals needed for MFP programming connections (V
also Programming connections.
Copyright © 2005, EM Microelectronic-Marin SA
Chip
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EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than
circuitry entirely embodied in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA
reserves the right to change the circuitry and specifications without notice at any time. You are strongly urged
to ensure that the information given has not been superseded by a more up-to-date version.
TQFP
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R
DIL
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2
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Signal Name
Qout /Osc2
V
Qin/Osc1
Buzzer
BAT
Strobe
PB[1]
PB[2]
PB[3]
PA[0]
PA[1]
PA[2]
PA[3]
C2B
C2A
C1B
C1A
V
V
reg
= V
SS
DD
Internal voltage regulator
Input/output, open drain
Input/output, open drain
Input/output, open drain
Output Buzzer terminal
Output Strobe terminal
Negative power supply
Input port A terminal 0
Input port A terminal 1
Input port A terminal 2
Input port A terminal 3
Positive power supply
Crystal terminal 1
Crystal terminal 2
Voltage multiplier
Voltage multiplier
Voltage multiplier
Voltage multiplier
port B terminal 1
port B terminal 2
port B terminal 3
Function
5
32 KHz crystal, MFP connection
32 KHz crystal, MFP connection
ref. terminal, MFP connection
Connect to minimum 100nF,
µP reset state or/and port B
DD
Not needed if ext. supply
Not needed if ext. supply
Not needed if ext. supply
Not needed if ext. supply
, V
MSC start/stop control
write or sleep flag out
Port B data[1] I/O or
Port B data[2] I/O or
Port B data[3] I/O or
reg
MFP Connection
MFP connection
Event counter,
, Qin, Qout, Test). See
Event counter
Ck[16] output
Ck[11] output
PWM output
TestVar 1
TestVar 2
TestVar 3
Remarks
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EM6521