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M306NKT-EPB User’s Manual 4. Hardware Specifications
REJ10J0519-0200 Rev.2.00 Oct. 16, 2006 Page 79 of 104
(2) Multiplex Bus Timing
Table 4.6 and Figure 4.5 show the bus timing in memory expansion mode and microprocessor mode (2 wait, accessing external
area and using multiplex bus).
Table 4.6 Memory expansion mode and microprocessor mode (2 wait, accessing external area and using multiplex bus)
Actual MCU
[ns]
This product
[ns]
Symbol Item
Min. Max. Min. Max.
td(BCLK-AD)
Address output delay time 50 See left
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 50 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 40 See left
th(BCLK-RD)
RD signal output hold time 0 See left
td(BCLK-WR)
WR signal output delay time 40 See left
th(BCLK-WR)
WR signal output hold time 0 See left
td(BCLK-DB)
Data output delay time (BCLK standard) 50 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) 40 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 See left
td(AD-WR)
After address WR signal output delay time 0 See left
tdz(RD-AD)
Address output floating start time 8 15
*1 Calculated by the following formula according to the frequency of BCLK.
10
)(
105.0
9
−
×
BCLKf
[ns]
*2 Calculated by the following formula according to the frequency of BCLK.
()
50
)(
105.0
9
−
×−
BCLKf
n
[ns] n: "2" for 2 wait
*3 Calculated by the following formula according to the frequency of BCLK.
40
)(
105.0
9
−
×
BCLKf
[ns]
*4 Calculated by the following formula according to the frequency of BCLK.
15
)(
105.0
9
−
×
BCLKf
[ns]