參數(shù)資料
型號(hào)： MB91FV310APFV-ES
元件分類(lèi)： 微控制器/微處理器
英文描述： RISC MICROCONTROLLER, PQFP144
封裝： 20 X 20 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-144
文件頁(yè)數(shù)： 9/68頁(yè)
文件大?。?/td> 14737K
代理商： MB91FV310APFV-ES
MB91310 Series
DS07-16505-3E
17
Oscillation Input at Power-ON
When turning the power on, maintain clock input until the device is released from the oscillation stabilization
wait state.
Notes on Power-ON/shut-down
Cautions to take when turning on/off VDDI (2.5 V internal power supply) and VDDE (3.3 V external-pin power
supply)
Do not apply VDDE (external) alone continuously (for over an indication of one minute) with VDDI (internal)
disconnected not to cause a reliability problem with the LSI.
When VDDE (external) returns from the OFF state to the ON state, the circuit may fail to hold its internal state,
for example, due to power supply noise.
Undefined Output on Power-ON
When the power supply is turned on, the output pin may remain indeterminate until the internal power supply
becomes stable.
About the attention when the external clock is used
When the external clock is used, in principle, supply a clock signal to the X0 (X0A, X0B) pin and an opposite-
phase clock signal to the X1 (X1A, X1B) pin at the same time. However, In this case. the stop mode must not
be used.(This is because, in STOP mode, the X1 (X1A, X1B) pin stops at “H” output.) At 12.5 MHz or less, the
device can be used with the clock signal supplied only to the X0 (X0A, X0B) pin.
An example of using the external clock is illustrated below.
Note : The X1 (X1A, X1B) pin must be designed to have a delay within 15 ns, at 10 MHz, from the signal to the X0
(X0A, X0B) pin.
When the power is turned on
VDDI (internal)
→ VDDE (external) → Analog → Signal
When the power is turned off
Signal
→ Analog → VDDE (external) → VDDI (internal)
X0, X0A, X0B
X1, X1A, X1B
MB91F312A/FV310A
[STOP mode (oscillation stop mode) cannot be used.]
External clock usage (normal)
X0, X0A, X0B
X1, X1A, X1B
MB91F312A/FV310A
OPEN
External clock usage (enabled at 12.5 MHz Max.)
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