M37270MF Datasheet, PDF (80/94 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
XCIN
XCOUT
OSC1 oscillating
mode selection bits
(Notes 1, 4)
XIN
XOUT
Timer 3 count
stop bit (Notes 1, 2)
Timer 4 count
stop bit (Notes 1, 2)
“1”
1/2
“0”
Internal system clock
selection bit (Notes 1, 3)
“1”
Timer 3
1/8
“0”
Timer 3
count source selection bit (Notes 1, 2)
Timer 4
Main clock (XIN–XOUT) stop bit (Notes 1, 3)
Internal system clock
selection bit (Notes 1, 3)
Timing
(Internal clock)
QS
SQ
QS
Reset
R STP instruction
WIT
R
instruction
R ^{STP instruction}
Reset
Interrupt disable flag I
Interrupt request
Notes 1 : The value at reset is “0.”
2 : Refer to the structure of timer mode register 2.
3 : Refer to the structure of CPU mode register (next page).
4 : Refer to the structure of clock source control register.
Fig. 93. Clock generating circuit block diagram
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