ml675050 Oki Semiconductor, ml675050 Datasheet - Page 53

• Manufacturer Part Number: ml675050
• Description: Arm7tdmi Based Micro-controller For Ic Card Reader/writer
• Manufacturer: Oki Semiconductor

ELECTRICAL CHARACTERISTICS (AC CHARACTERISTICS)
(17) IOAC register and timing parameters that can be set
(18) Address hold time
OKI Semiconductor
(Please see ML675050 User’s manual when refer to the IOAC register in detail)
The following timing parameters can be set:
IOTYPE[2:0]: Setting of Timing Parameters (Values in the table indicate AHB_CLK count)
Note: For IOAC, see Section 8.4.4, “IO
Access master
ARM processor
AHB master
-
-
-
Address hold time is fixed by a combination of the type of read access, data size at the time of read
access, and IO bus width.
Address setup
RD_N/WR_N
Data off timing (period for waiting the I/O output floating delay time from RD_N deassert)
SINGLE/INCR
IO TYPE[2:0]
WRAP4/8/16
pulse width
INCR4/8/16,
Type of
access
000
001
010
011
100
101
110
111
Access
Data size at the time
read access (bit)
Address
setup
Control Register.”
1
1
1
2
2
2
3
4
8/16
8/16
8/16
16
16
of
8
8
RD_N/WR_N
pulse width
12
16
20
24
1
4
6
8
IO bus width
8/16
(bit)
16
16
8
8
8
8
Data off
timing
11
1
3
4
5
7
8
9
Address hold time
(AHB_CLK)
1
1
0
1
1
0
0
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