MS87V1021 Datasheet, PDF (27/63 Pages) OKI electronic componets – Recording and Playback IC with Built-in 2-Mbit DRAM

1Semiconductor
PEDS87V1021-01
MS87V1021
Reset function
Specified power
V_DD
supply voltage
RESET
BUSY
t_RST
t_REX
XT
XT
Oscillation start
Stable oscillation
[Reset after powering on]
When powering on, be sure to initialize the internal circuit by inputting an “L” level pulse to the RESET pin for a
specified time after the power supply voltage level reaches the specified level and oscillation becomes stable.
Power down function
CS
SK
SI
Power down
command
RESET
BUSY
XT
XT
t_PXT
Stable oscillation
t_RST
t_REX
Oscillation
Oscillation stop
start
Stable oscillation
Standby
Power down
command input
Power down command
processing
Power down
Oscillation start ^Executing
RESET input ^RESET
Standby
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