M37281EKSP Datasheet, PDF (120/172 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M37281MAH–XXXSP,M37281MFH–XXXSP,M37281MKH–XXXSP, M37281EKSP
XCIN
XCOUT
OSC1 oscillating
mode selection bits
(See notes 1, 4)
XIN
XOUT
“1”
1/2
1/8
“0”
Internal system clock
selection bit (See notes 1, 3)
QS
Main clock (XIN–XOUT) stop bit (Notes 1, 3)
Internal system clock
selection bit (Notes 1, 3)
SQ
R STP instruction
WIT
R
instruction
Timer 3 count
stop bit (See notes 1, 2)
Timer 4 count
stop bit (See notes 1, 2)
“1”
Timer 3
“0”
Timer 3
count source selection bit (See notes 1, 2)
Timer 4
Timing φ
(Internal clock)
QS
Reset
R ^{STP instruction}
Reset
Interrupt disable flag I
Interrupt request
Notes 1 : The value at reset is “0.”
2 : Refer to timer mode register 2.
3 : Refer to CPU mode register (next page).
4 : Refer to clock source control register.
Fig.8.14.3 Clock Generating Circuit Block Diagram
Rev.1.01 2003.07.16 page 120 of 170