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M306NKT3-RPD-E User’s Manual 4. Hardware Specifications
REJ10J0326-0400 Rev.4.00 Sep. 01, 2006 Page 75 of 104
(2) Multiplex Bus Timing
Table 4.3 and Figure 4.2 show the bus timing in memory expansion mode and microprocessor mode (2 wait, accessing external
area, using multiplex bus).
Table 4.3 Memory expansion mode and microprocessor mode (2 wait, accessing external area, using multiplex bus)
Actual MCU
[ns]
This product
[ns]
Symbol Item
Min. Max. Min. Max.
td(BCLK-AD)
Address output delay time 25 26
th(BCLK-AD)
Address output hold time (BCLK standard) 4 See left
th(RD-AD)
Address output hold time (RD standard) (*1) See left
th(WR-AD)
Address output hold time (WR standard) (*1) See left
td(BCLK-CS)
Chip-select output delay time 25 See left
th(BCLK-CS)
Chip-select output hold time (BCLK standard) 4
See left
th(RD-CS)
Chip-select output hold time (RD standard) (*1)
See left
th(WR-CS)
Chip-select output hold time (WR standard) (*1)
See left
td(BCLK-RD)
RD signal output delay time 25 See left
th(BCLK-RD)
RD signal output hold time 0 -1
td(BCLK-WR)
WR signal output delay time 25 See left
th(BCLK-WR)
WR signal output hold time 0 -4
td(BCLK-DB)
Data output delay time (BCLK standard) 40 See left
th(BCLK-DB)
Data output hold time (BCLK standard) 4 See left
td(DB-WR)
Data output delay time (WR standard) (*2) See left
th(WR-DB)
Data output hold time (WR standard) (*1) See left
td(BCLK-ALE)
ALE output delay time (BCLK standard) 25 See left
th(BCLK-ALE)
ALE output hold time (BCLK standard) -4 See left
td(AD-ALE)
ALE output delay time (Address standard) (*3) See left
th(ALE-AD)
ALE output hold time (Address standard) (*4) See left
td(AD-RD)
After address RD signal output delay time 0 -4
td(AD-WR)
After address WR signal output delay time 0 -3
tdz(RD-AD)
Address output floating start time 8 17
*1 Calculated by the following formula according to the frequency of BCLK.
10−
×
)(
100.5
9
BCLKf
[ns]
*2 Calculated by the following formula according to the frequency of BCLK.
()
40
)(
100.5
9
−
×−
BCLKf
n
[ns] n: "2" for 2 wait
*3 Calculated by the following formula according to the frequency of BCLK.
25
)(
100.5
9
−
×
BCLKf
[ns]
*4 Calculated by the following formula according to the frequency of BCLK.
15
)(
100.5
9
−
×
BCLKf
[ns]