HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 177
HD6412320
Manufacturer Part Number
HD6412320
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412320.pdf
(1302 pages)
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Name
Chip select 6
Chip select 7
Upper column address strobe
Lower column strobe
Wait
Bus request
Bus request acknowledge
Bus request output
Note: * The DRAM interface and the CAS and LCAS pin functions are not supported in the
H8S/2321.
Symbol
CS6
CS7
CAS *
LCAS *
WAIT
BREQ
BACK
BREQO
I/O
Output
Output
Output
Output
Input
Input
Output
Output
Function
selected.
selected.
2-CAS DRAM upper column address strobe
signal.
external 3-state access space.
Request signal that releases bus to
external device.
been released.
internal bus master accesses external
space when external bus is released.
Strobe signal indicating that area 6 is
Strobe signal indicating that area 7 is
DRAM lower column address strobe signal.
Wait request signal when accessing
Acknowledge signal indicating that bus has
External bus request signal used when
Rev.6.00 Sep. 27, 2007 Page 147 of 1268
Section 6 Bus Controller
REJ09B0220-0600
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