Section 6
Bus Controller (BSC)
Rev.2.00 Jun. 28, 2007 Page 151 of 666
REJ09B0311-0200
Name Symbol
I/O
Function
Low-low write/lower-lower byte
select
LLWR
/
LLB
Output
•
Strobe signal indicating that the basic
bus, burst ROM, or address/data
multiplexed I/O space is written to, and
the lower byte (D7 to D0) of data bus is
enabled
•
Strobe signal indicating that the byte
control SRAM space is accessed, and
the lower byte (D7 to D0) of data bus is
enabled
Chip select 0
CS0
Output
Strobe signal indicating that area 0 is
selected
Chip select 1
CS1
Output
Strobe signal indicating that area 1 is
selected
Chip select 2
CS2
Output
Strobe signal indicating that area 2 is
selected
Chip select 3
CS3
Output
Strobe signal indicating that area 3 is
selected
Chip select 4
CS4
Output
Strobe signal indicating that area 4 is
selected
Chip select 5
CS5
Output
Strobe signal indicating that area 5 is
selected
Chip select 6
CS6
Output
Strobe signal indicating that area 6 is
selected
Chip select 7
CS7
Output
Strobe signal indicating that area 7 is
selected
Wait
WAIT
Input
Wait request signal when accessing
external address space.
Bus request
BREQ
Input
Request signal for release of bus to
external bus master
Bus request acknowledge
BACK
Output
Acknowledge signal indicating that bus has
been released to external bus master
Bus request output
BREQO
Output
External bus request signal used when
internal bus master accesses external
address space in the external-bus released
state
External bus clock
B
φ
Output
External bus clock
Summary of Contents for H8SX/1650
Page 2: ...Rev 2 00 Jun 28 2007 Page ii of xxii...
Page 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Page 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Page 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Page 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Page 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Page 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Page 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Page 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Page 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Page 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
Page 688: ...Rev 2 00 Jun 28 2007 Page 666 of 666 REJ09B0311 0200...
Page 691: ......
Page 692: ...H8SX 1650 Group Hardware Manual...