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7643 Datasheet(PDF) 80 Page - Renesas Technology Corp

Part # 7643
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  424 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7643 Datasheet(HTML) 80 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 63 of 103
REJ09B0133-0200
OVERVIEW
FUNCTIONAL DESCRIPTION
7643 Group
Fig. 59 Clock generating circuit block diagram
WIT
instruction
Internal
clock
φ
STP instruction
Interrupt request
Interrupt disable
flag l
D
R
Q
T
PIN1
D
R
Q
T
PIN2
D
R
Q
T
PIN1
D
R
Q
T
P2+
RQ
S
DQ
T
PIN1
DQ
T
P2+
Oscillator count-down
timer 1 to 2
RQ
S
RQ
S
RQ
S
DQ
T
DQ
T
SQ
R
S
QB
R
Delay
Slow memory
wait
LPF
LPF
1/2
Frequency
synthesizer
Frequency synthesizer
enable bit
LPF
1/2
P2 peripheral
P1 peripheral
STP instruction
STP instruction
RESET
STP
instruction
P2LATRSTB
P1HATRSTB
P2 peripheral
P1 peripheral
P2 out
P1 out
P2LATRSTB
P1HATRSTB
P2
P1
DQ
T
PIN2
P2+
Main clock (XIN-XOUT) stop bit
OSCSTP
RESET
XCOSCSTP
XOSCSTP
XDOSCSTP
XOD
XCDOSCSTP
XCOD
Sub-clock (XCIN-XCOUT)
stop bit
Slow memory wait
select bit
Slow memory wait
mode select bit
RDY
XIN
XOUT
Main clock (XIN-XOUT)
stop bit
XOSCSTP
XCIN
Sub-clock (XCIN-XCOUT)
stop bit
XCOUT
Frequency synthesizer
input bit
fIN
USB 48 MHz
clock output
fSYN
fEXT
Internal system clock
select bit
f(XIN)
f(XCIN)
XIN drive select bit
P1+, P2+
PIN1, PIN2
P1HATRSTB
P2LATRSTB
RESET
XCOSCSTP
External clock select bit



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