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PDF BU24591 Data sheet ( Hoja de datos )
| Número de pieza | BU24591 | |
| Descripción | 4bit 1chip micro-controller for CD-DA | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Optical ICs
BU24591
4bit 1chip micro-controller for CD-DA
BU24591
The BU24591 is a 4bit 1chip micro-controller for CD-DA that integrates multiple I/O, such as 8bit 8-channel AD converter,
pulse width counter, two lines of SIO, and LCD controller driver with 80 segment (Max.). All LCD segment can be
switched into CMOS output by the program. These I/O achieves multi-function with few pins.
!Applications
Portable CD-DA, CD radio cassette player
!Features
1) Low voltage, high-speed operation
(VDD=2.3 to 3.6V at 4.4MHz)
2) Built-in 8bit 8-channel AD converter
3) Built-in pulse width counter
4) Built-in two lines of SIO
5) Built-in LCD controller driver with 20 segments, 4 common (With 3 common available)
6) All segment output of LCD controller driver can be switched into CMOS output by the program.
!Absolute maximum ratings (Ta=25°C)
Parameter
Applied voltage
Power dissipation
Operating temperature range
Storage temperature range
Symbol
VDD
Pd
Topr
Tstg
∗ Reduced by 5mW for each increase in Ta of 1°C over 25°C.
Limits
−0.3 to +4.5
500 ∗
−25 to +75
−55 to +125
Unit
V
mW
°C
°C
!Recommended operating conditions (Ta=25°C)
Parameter
Power supply voltage
Input "H" voltage
Input "L" voltage
Symbol
VDD
VIHS
VILS
Min.
2.3
0.75VDD
0
Typ.
−
−
−
Max.
3.6
VDD
0.15VDD
Unit
V
V
V
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1 page  
Optical ICs
!Input output circuit
TYPE A
TYPE B
TYPE C
BU24591
• Hysteresis input
TYPE D
• Hysteresis input with pull-down resistance.
• Hysteresis input with pull-up resistance which can be
turned ON/OFF by program.
TYPE E
TYPE F
• Hysteresis input with pull-up resistance or
Nch open drain output, which can be controlled
by program.
• Hysteresis input or CMOS output, which can be
controlled by program.
• LCD driver output. Only SEG can be switched into
CMOS output.
TYPE G
TYPE H
• Analog input or Hysteresis input, which can be
controlled by program.
• Input and output of oscillation circuit with STOP control.
∗ All digital inputs are CMOS gate input.
Fig.1
5/7
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BU24591.PDF ] | |
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