EM6521 Datasheet, PDF (6/68 Pages) List of Unclassifed Manufacturers – 4 bit Microcontroller

R
Figure 3. Typical Configuration
LC D D isplay
C rys ta l
EM6521
All Capacitors 100nF
C1
VL1
CO M [4:1]
SEG [20:1]
Qin Oout
C1
VL2
C1
VL3
Reset
C1A
C2
C1B
C2
C2A
C2B
EM6521
VDD (Vbat)
Vreg
Port A
Test
Port B
Port SP
Buzzer
Strobe
VSS
C3 C4
1.1 Programming Connections
The EM6521 can be programmed using the standard EM MFP programming box for 4 bit uControllers. The
interface signals are listed in the table below. The circuit can be programmed on the programming box or
directly on the PCB . For more information please refer to the MFP programmer’s manual.
Chip TQFP
52
29 29
44 44
45 45
46 46
47 47
48 48
DIL
64 Signal Name
44
Test
62
V_BAT = V_DD
63
V_reg
64
Qin/Osc1
2 Qout /Osc2
3
V_SS
Function
Input test terminal
Internal pull-down 15k
Positive power supply
Internal voltage regulator
Crystal terminal
Crystal terminal
Negative power supply
Remarks
Usually 1 in MFP mode, 0 resets the
MFP interface
MFP Power Connection
MFP power Connection, adapts the
Oscillator voltage to V_BAT
MFP Serial Data Input / Output
MFP serial Clock Input
MFP Connection, Reference terminal
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