M658489BFP Datasheet, PDF (9/15 Pages) Mitsubishi Electric Semiconductor – SINGLE CHIP SURROUND PROCESSOR

MITSUBISHI SOUND PROCESSOR ICs
50^SERIES
M65849BFP
SINGLE CHIP SURROUND PROCESSOR
The Power On Reset
When the IC is supplied Vcc, the reset circuit is on and after about 120ms (Vcc=5V C 24 =47µF) the
reset circuit is off automatically.
The conditions are as follows.
D0 D1 D2
LLL
9.2ms
D3 D4 D5 D6 D7 D8
LHL LLH
I(L+R)
NORMAL
MICSW
OFF
D9 D10 D11 D12 D13 D14 D15
HHHHHL H
-∞
-∞
DATA LOAD
*1 The Reset Time
The reset time depends on the external C of 24 pin and the time can be calculated
as follows.
The Reset Time (mS)=2.5 x c (mS)
Ex.)
In The Case Of c=47µF
The Reset Time 2.5 x 47=117.5 (mS)
Clock oscillator circuit
This IC incorporates a current control type clock oscillator circuit in it, thus providing circuit
configuration just by connecting an Rc for current control pin 1 (MCLKCONT).
Fully internal clock supply prevents occurrence of undesired radiation without affecting any
external circuit.
The oscillator frequency fck is following.
fck=4MHz(Rc=22kΩ)
DC Current
1
Rc
Clock
oscillator
circuit
Clock frequency:fck
MITSUBISHI
ELECTRIC
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