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7641 Datasheet(PDF) 35 Page - Renesas Technology Corp

Part # 7641
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  385 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7641 Datasheet(HTML) 35 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 18 of 113
7641 Group
REJ09B0336-0200
HARDWARE
FUNCTIONAL DESCRIPTION
Fig. 13 Port block diagram (2)
S0
S1
A0
A1
S0
S1
S1
S0
SOF signal
(7) Port P51
Data bus
Direction
register
Port latch
TOUT output control bit
Timer 1, 2 output
IBF0 output enable bit
Data bus
Direction
register
Port latch
IBF0 output
(9) Port P53
(11) Port P6
Write to Master CPU bus interface
Read from Master CPU bus interface
Data bus
Direction
register
Port latch
DBBOUT0
DBBS0
DBBOUT1
DBBS1
DBBIN0
DBBIN1
(8) Port P52
Data bus
Direction
register
Port latch
OBF0 output
(10) Ports P54 to P57
Data bus
Direction
register
Port latch
Master CPU bus
interface enable bit
Master CPU bus
functions input ✻
(12) Port P70
Data bus
Direction
register
Port latch
USB SOF port select bit
✻:
Ports P54 to P57 functions
Pin name
P54
P55
P56
P57
Functions
S0
A0
R(E)
W(R/W)
Read from Master CPU bus
interface
Write to Master CPU
bus interface
OBF0 output enable bit
XCOUT output
XCOUT oscillation drive disable bit
Sub-clock (XCIN-XCOUT) stop bit



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