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GÉNÉRATEUR DE MÉLODIES UM3491
Produits
Fiches
techniques
UM3491
| Nom et logo du constructeur | Référence composant |
 |
UM3491 |
General description :
The UM3491 series comprises mask-Rom-programmed melody generators with
accompaniment implemented through CMOS technology. They are designed to play melodies
according to previously programmed information.
The devices also include melody and accompaniment which are mixed to generate
simultaneous outputs.
The UM3491 series is recommanded for applications such as toys, doorbells, melody
clock/timers, etc.
FEATURES |
Typical 3V operating voltage
1024-note memory up to 16 songs can be selected
Dual tone mixed output 2 individual external envelop circuits
RC oscillator with one external resistor
31 programmable tones (including rest) from C4 F7
15 programmable tempos
Pulse signal output when melody ends
Low standby current
Single song played repeatedly or auto stop
All songs played repeatedly or auto stop
Any song can be selected sequentially
 |
 |
Absolute Maximum Rating :
Supply voltage................................ -0.3V to +5.0V
Applied voltage at any pin ............... VSS -0.3V
to VDD +0
Ambient temperature under Bias ..... -10°C to 60°C
Storage temperature....................... -55°C to 125°C
Comments :
Stresses above those listed under "Absolute Maximum Rating" may cause
permanent damage to the device.
These are stress ratings only. Functional operation of this device at these or any
other conditions above those indicated in the operational sections of this specification
is not implied and exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
DC Electrical Characteristics (VSS = 0V, TA = 25°C, FOSC = 64KHz, unless otherwise specified) :
| Parameter | Symbol | Min. | Typ. | Max. | Unit. | Conditions |
| Operating voltage | VDD | 2.6 | 3 | 3.3 | V | |
| Standby current | ISTB | - | - | 2 | µA | VDD = 3V osc halting |
| Operating current | IDD | - | 2 | 5 | mA | VDD = 3V, no load |
| BD Drive current | IBD | 1 | - | - | mA | VDD = 3V, VOH = 1.5V, MTI = 0V |
| BD Sink current | IBS | 1 | - | - | mA | VDD = 3V, VOL = 1.5V, MTI = 3V |
| /BD Drive current | I/BD | 1 | - | - | mA | VDD = 3V, VOH = 1.5V, MTI = 0V |
| /BD Sink current | I/BS | 1 | - | - | mA | VDD = 3V, VOL = 1.5V, MTI = 3V |
| Frequency Deviation per lot | DF/F | -10% | - | +10% | VDD = 3V | |
| Frequency stability | DF/F | - | - | 20% | [FOSC(3.3V) - FOSC(2.7V)]/FOSC(2.7V) | |
| END Drive current | IEND | 100 | - | - | µA | VDD = 3V, VEND = 1.1V |
| BUSY Drive current | IBUSY | 100 | - | - | µA | VDD = 3V, VBUSY = 1.1V |
Application Circuits (for reference only) :
A- General application for speaker
|
B- General application for piezo
|
