Rev. 1.00, 09/03, page 93 of 704
6.2 Input/Output
Pins
Table 6.1 summarizes the pin configuration of the bus controller.
Table 6.1
Pin Configuration
Symbol I/O Function
AS
Output
Strobe signal indicating that address output on address bus is enabled,
during normal expansion
CS1
Output
Chip select signal indicating that area 1 is accessed
CS2
Output
Chip select signal indicating that area 2 is accessed
CS3
Output
Chip select signal indicating that area 3 is accessed
RD
Output
Strobe signal indicating that the external address area is being read
HWR
Output
Strobe signal indicating that external address space is written to, and
upper half (D15 to D8/AD15 to AD8) of data bus is enabled
LWR
Output
Strobe signal indicating that basic bus interface space is written to, and
lower half (D7 to D0/AD7 to AD0) of data bus is enabled
WAIT
Input
Wait request signal when accessing external space
AH
Output
Indicates the address fetch timing signal when in multiplex extension
AD15 to AD0 I/O
Address output and data input/output pins
Summary of Contents for H8S/2437
Page 2: ...Rev 1 00 09 03 page ii of xxxviii ...
Page 8: ...Rev 1 00 09 03 page viii of xxxviii ...
Page 32: ...Rev 1 00 09 03 page xxxii of xxxviii ...
Page 38: ...Rev 1 00 09 03 page xxxviii of xxxviii ...
Page 168: ...Rev 1 00 09 03 page 130 of 704 ...
Page 336: ...Rev 1 00 09 03 page 298 of 704 ...
Page 402: ...Rev 1 00 09 03 page 364 of 704 ...
Page 454: ...Rev 1 00 09 03 page 416 of 704 ...
Page 512: ...Rev 1 00 09 03 page 474 of 704 ...
Page 562: ...Rev 1 00 09 03 page 524 of 704 ...
Page 648: ...Rev 1 00 09 03 page 610 of 704 ...
Page 672: ...Rev 1 00 09 03 page 634 of 704 ...
Page 732: ...Rev 1 00 09 03 page 694 of 704 ...
Page 742: ...Rev 1 00 09 03 page 704 of 704 ...
Page 745: ......
Page 746: ...H8S 2437 Group Hardware Manual REJ09B0059 0100Z ...