Outlines - Toshiba TXZ SERIES Reference Manual

1. Outlines

Oscillation Frequency Detector (OFD) detects abnormalities as the clock signal to monitor exceeding the range
of the set-up frequency. The lists of functions are as follows.
Function
Classification
Abnormal
detection of
the clock
frequency
Protection
Note: When stopping the standard clock during OFD operation ([OFDRST]<OFDRSTEN>=1), OFD reset occurs.
(When stopping the standard clock before OFD operation, OFD reset does not occur.)
2018-03-09
Function
Monitor clock
Standard clock (Note)
Frequency detective
range
State monitor
Reset output
Protection function
External high speed oscillator clock (f
or
High speed clock (f c )
Internal high speed oscillator 2 clock (f
The maximum, the minimum are settable.
status register.
>operation / no operation
>abnormality / no abnormality
Prohibition/permission of a reset output are possible.
Incorrect writing is prevented.
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Ocsillation Frequency Detector
Operation
)
EHOSC
IHOSC2
TXZ Family
)
Rev. 1.1