EM MICROELECTRONIC
- MARIN SA
EM5060
Low Voltage CMOS Driver Circuit
Features
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Four low resistance output drivers for bipolar or
unipolar watch stepping motors.
Low transversal transition current.
Very low current consumption: 0.1 µA at 25°C.
Two different output resistances programmable by
metal mask.
Wide power supply voltage range: 1.1 to 3.5 V.
Tristate input for applications as fast bus driver.
ESD and latch-up protections on input and output
pads.
Functional Diagram
Rch
=200Ω
M
OUT1
VDD
EM5060 V1
VSS
OUT2
OUT3
Rch
=200Ω
M
OUT4
Description
The EM5060 (previously named H5060) is a low power
integrated circuit in HCMOS Silicon Gate Technology
designed to drive bipolar or unipolar stepping motors.
This device contains four identical and independent non-
inverting circuits which can be connected by metal mask
programation so as to obtain two identical non-inverting
circuits with a lower resistance output.
Each buffer is driven by a special cell which dephases the
P and N transistor signal input, for a minimization of the
transversal transition current.
A tristate input HIZ, with internal pulldown resistor
provides the high impedance state of the four outputs.
HIZ
IN1
IN2
IN3
IN4
Rch
=200Ω
M
OUT1
VDD
VSS
OUT2
EM5060 V2
Application
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Motor driver for watch/clock application
Bus drivers
LED driver
HIZ
IN1
IN2
Fig. 1
Pin Assignment
Pad
OUT4
OUT3
OUT2
OUT1
V
DD
HIZ
IN1
IN2
IN3
IN4
V
SS
Function
Output buffer n°4
Output buffer n°3
Output buffer n°2
Output buffer n°1
Positive supply voltage
Tri state input
Input buffer n°1
Input buffer n°2
Input buffer n°3
Input buffer n°4
Negative supply voltage
VDD OUT1 OUT2 OUT3 OUT4
VDD NC OUT1 OUT2 NC
HIZ
EM5060
V1
HIZ
EM5060
V2
IN1
IN2
IN3
IN4 VSS
NC
IN1 IN2
NC
VSS
Fig. 2
Copyright
2002, EM Microelectronic-Marin SA
1
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EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
