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PDF MSM9836-xxx Data sheet ( Hoja de datos )
| Número de pieza | MSM9836-xxx | |
| Descripción | Voice Synthesis IC with Built-in Mask ROM | |
| Fabricantes | OKI electronic componets | |
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E2D0082-29-93
¡¡SemicondSucetormiconductor
MSM9836-xxx
Voice Synthesis IC with Built-in Mask ROM
This versioMnS: MSe9p8.3169-9x9xx
Previous version: May. 1997
GENERAL DESCRIPTION
The MSM9836 is a PCM voice synthesis IC with built-in 3-Mbit mask ROM, D/A converter, and
low-pass filter (LPF).
The MSM9836 is specifically designed for applications that use a microcontroller.
For this reason, functional support for standalone mode and RC oscillation has been omitted
from the MSM9805, and the ROM capacity and the number of phrases have been increased.
By using Oki's Sound Analysis and Editing Tool, ROM data such as Phrase Control Table can be
easily set, created, edited, and evaluated.
The following table lists the functional differences between the MSM9836 and the MSM9805.
ROM Capacity
Interface
Oscillation
Maximum Number of
Phrases
Status Signal
MSM9836
3 Mbits
Microcontroller
Ceramic
MSM9805
2 Mbits
Microcontroller/Standalone
Ceramic/RC
127 63
NAR/BUSY simultaneous output Only NAR output when operating
in microcontroller interface mode
FEATURES
• 8-bit OKI nonlinear PCM method/8-bit Straight PCM method
• Sampling frequency
: 4.0 kHz/5.3 kHz/6.4 kHz/8.0 kHz/10.6 kHz/12.8 kHz/
(Can be set for each phrase)
16.0 kHz
• ROM capacity
: 3 Mbits
• Maximum playback time
• Master clock frequency
: 97.7 sec (fSAM = 4.0 kHz)
73.7 sec (fSAM = 5.3 kHz)
61.0 sec (fSAM = 6.4 kHz)
48.8 sec (fSAM = 8.0 kHz)
: 4.096 MHz
(Ceramic oscillation/external
clock input)
• Edit ROM function
• Maximum number of phrases : 127
• Built-in current mode 10-bit D/A converter
• Built-in low-pass filter
• Power supply voltage
: +2.0 to +5.5 V
• Package :
24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name: MSM9836-xxxGS-K)
xxx indicates code number.
Chip
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1 page  
¡ Semiconductor
MSM9836-xxx
ABSOLUTE MAXIMUM RATINGS
Parameter
Power Supply Voltage
Input Voltage
Storage Temperature
Symbol
VDD
VIN
TSTG
Condition
Ta=25°C
—
Rating
–0.3 to +7.0
–0.3 to VDD + 0.3
–55 to +150
(GND=0V)
Unit
V
V
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
Power Supply Voltage
Operating Temperature
Original Oscillation Frequency
Symbol
VDD
Top
Condition
—
—
fOSC When crystal is selected
(GND=0 V)
Range
Unit
2.0 to 5.5
V
–40 to +85
°C
Min.
3.5
Typ.
4.096
Max.
4.5
MHz
ELECTRICAL CHARACTERISTICS
DC Characteristics (1)
(VDD=5.0 V, GND=0 V, Ta=–40 to +85°C, unless otherwise specified)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
"H" Input Voltage
VIH — 4.2 — — V
"L" Input Voltage
VIL — — — 0.8 V
"H" Output Voltage
VOH
IOH=–1 mA
4.6 — — V
"L" Output Voltage
VOL
IOL=2 mA
— — 0.4 V
"H" Input Current 1
IIH1
VIH=VDD
— — 10 µA
"H" Input Current 2
Applies to XT pin only.
IIH2
VIH=VDD
— — 15 µA
"L" Input Current 1
IIL1
VIL=GND
–10 —
— µA
"L" Input Current 2 (*1)
IIL2
Internal pull-up resistor –200 –90
–30
µA
Dynamic Supply Current 1 (*2)
IDD1 VREF=VDD, AOUT voltage=0V —
0.4
1 mA
At maximum output current
Dynamic Supply Current 2 (*3)
IDD2
—
VREF=GND, AOUT voltage=0V
—
16 mA
Standby Current
Ta=–40 to +70°C
— — 10 µA
IDS
Ta=–40 to +85°C
— — 50 µA
AOUT Output Current
IAOUT
At maximum output current
VREF=VDD, AOUT voltage=0V
6
9.5 15 mA
VREF Pin Pull-Down Resistance
RVREF
—
7 10 13 kW
*1 Applicable to RESET, ST
*2 Dynamic supply current excluding DAC output current
*3 Dynamic supply current at maximum output current
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¡ Semiconductor
MSM9836-xxx
1. Sampling Frequency
As shown in Table 1.1, 7 sampling frequencies are available.
A sampling frequency can be selected and assigned to each phrase in ROM data.
Table 1.1 Sampling Frequency
Sampling Frequency
At standard
oscillation frequency
4.0 kHz
5.3 kHz
6.4 kHz
8.0 kHz
10.6 kHz
12.8 kHz
16.0 kHz
Frequency diving ratio
fOSC1/1024
fOSC1/768
fOSC1/640
fOSC1/512
fOSC1/384
fOSC1/320
fOSC1/256
2. Recording/Playback Time
Figure 2.1 below shows memory allocation of the on-chip Mask ROM. About 17 Kbits of data area
is allocated for the Phrase Control Table, Phrase Data Control and Test Data.
Therefore, actual data area for storing sound data equals the total Mask ROM capacity minus 17
Kbits.
Phrase Control Table Area 8K bit
Pharase Data Control Area
Test Data Area
8K bit
1K bit
On-chip Mask ROM Capacity
3072K bit
User's Area
3055K bit
Figure 2.1 Memory Allocation of On-chip Mask ROM
11/23
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