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3819 Scheda tecnica(PDF) 63 Page - Renesas Technology Corp

Il numero della parte 3819
Spiegazioni elettronici  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  218 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

3819 Scheda tecnica(HTML) 63 Page - Renesas Technology Corp

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49
3819 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Notes
Main clock stop bit (Note 3)
Middle/
High-speed mode
High-speed mode
or Low-speed mode
Main clock division ratio selection bit (Note 3)
Middle-speed mode
Timing
φ
(Internal clock)
WIT
instruction
QS
R
STP instruction
XIN
XOUT
Port XC switch bit (Note 3)
Internal system clock selection bit
Low-speed mode
(Note 1, 3)
Timer 1 count
source selection
bit (Note 2)
XCIN
XCOUT
“1”
“0”
Reset
Interrupt disable flag I
Interrupt request
1/4
1/2
1/2
Timer 1
“1”
“0”
“1”
“0”
“1”
“0”
SQ
R
QS
R
STP instruction
1 : When selecting the low-speed mode, set the port XC switch bit to “1”.
2 : Refer to the structure of timer 12 mode register.
3 : Refer to the structure of CPU mode register (next page).
Fig. 49 Clock generating circuit block diagram



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