h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 84
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h8s-2172
Manufacturer Part Number
h8s-2172
Description
Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2172.pdf
(570 pages)
- Current page: 84 of 570
- Download datasheet (5Mb)
3.3
3.3.1
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is enabled.
After a reset, the LSI is set to single-chip mode. To access an external address space, bit EXPE in
MDCR should be set to 1.
In extended mode, ports 6 and 7 function as input ports after a reset. Ports 6 and 7 function as an
address bus by setting the AHOE, AMOE, ALOE bits to 1 in the port function control register 1
(PFCR1). Ports 5 and 8 function as a data bus, and parts of ports 9 and A function bus control
signals.
3.3.2
Table 3.2 shows pin functions in operating mode 2.
Table 3.2
[Legend]
*: After a reset
Rev. 2.00, 03/04, page 52 of 534
Port
Port 5
Port 6
Port 7
Port 8
Port 9
Port A
Operating Modes
Mode 2
Pin Functions
Pin Functions in Operating Mode 2
P97
P96 to P90
PA3 to PA1
PA0
Mode 2
I/O port*/Data bus I/O
I/O port*/Address bus output
I/O port*/Address bus output
I/O port*/Data bus I/O
I/O port*/Clock I/O
Input port*/Control signal output
I/O port*/Address bus output/Control signal output
I/O port*/Address bus output
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