Section 6 Bus Controller
Rev. 3.00 Jan 25, 2006 page 121 of 872
REJ09B0286-0300
Table 6.7
Bus Specifications for CF Expansion Area (Memory Card Mode)/Basic Bus
Interface
Bus Specifications
ASTCP
WMS21
WMS20
WC22
WC21
WC20
Bus Width
Number of
Access
States
Number of
Program
Wait States
0
—
—
—
—
—
16
2
0
1
0
1
—
—
—
16
3
0
0
0
0
3
0
1
1
1
0
2
1
3
1
0
0
4
1
6
1
0
8
Other than
WMS21 = 0 and
WMS20 = 1 or
WMS21 = 1 and
WMS20 = 1
1
10
Legend:
: Don’t care
6.4.2
Advanced Mode
This LSI cannot output upper addresses (A23 to A18) in mode 2 (advanced mode) because this
LSI has 18 address output pins (A17 to A0). Therefore, the external address space (H'FFF000 to
H'FFF7FF) can be accessed by specifying the
AS
/
IOS
pin as an I/O strobe pin. The 256-kbyte
expansion area (H'F80000 to H'FBFFFF) and CP expansion area (H'FFC000 to H'FFDFFF) can be
accessed by the
CS256
pin and
CPCS1
pin functions, respectively.
The external address space is initialized as the basic bus interface and a 3-state access space. In
mode 2, the address space other than on-chip ROM, on-chip RAM, internal I/O registers, and their
reserved areas is specified as the external address space. The on-chip RAM and its reserved area
are enabled when the RAME bit in SYSCR is set to 1, and disabled when the RAME bit is cleared
to 0. Addresses H'FF0800 to H'FF7FFF, H'FFE080 to H'FFEFFF, and H'FFFF00 to H'FFFF7F in
the on-chip RAM area and its reserved area are always specified as the external address space.
Summary of Contents for H8S/2158
Page 10: ...Rev 3 00 Jan 25 2006 page viii of lii...
Page 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Page 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
Page 54: ...Rev 3 00 Jan 25 2006 page lii of lii...
Page 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Page 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Page 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Page 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Page 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Page 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Page 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Page 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Page 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Page 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Page 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Page 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Page 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Page 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Page 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...