M3062PT2-EPB User’s Manual 4. Hardware Specifications
REJ10J0868-0200 Rev.2.00 January 16, 2006
(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 See left
th(BCLK-AD) Address output hold time (BCLK standard) 4 See left
th(RD-AD) Address output hold time (RD standard) (*1) (*4)
th(WR-AD) Address output hold time (WR standard) (*1) (*4)
td(BCLK-CS) Chip-select output delay ti me 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) (*4)
th(WR-CS) Chip-select output hold time (WR standard) (*1) (*4)
td(BCLK-RD) RD signal output delay time 25 See left
th(BCLK-RD) RD signal output hold time 0 See left
td(BCLK-WR) WR signal output delay time 25 See left
th(BCLK-WR) WR signal output hold time 0 See left
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) (*4)
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) 30 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.
)(
105.0 9
BCLKf
× [ns]
*2 Calculated by the following formula according to the frequency of BCLK.
()
40
)(
105.0 9
−
×−
BCLKf
n [ns] n: "2" for 2 wait
*3 Calculated by the following formula according to the frequency of BCLK.
25
)(
105.0 9
−
×
BCLKf [ns]
*4 Calculated by the following formula according to the frequency of BCLK.
12
)(
105.0 9
−
×
BCLKf [n s]
Page 74 of 102