Texas Instruments TCM4300, Data Manual

Page: 26 / 69

3–3
3.3 TCM4300 to Microcontroller Interface Timing Requirements (Mitsubishi
Write Cycle) (see Figure 3–3 and Note 2)
PARAMETER
ALTERNATE
SYMBOL
MIN MAX
UNIT
tsu(R/W)
Setup time, read/write MCRW stable before falling edge of
strobe MCDS
TRW(SU) 0 ns
th(R/W)
Hold time, read/write MCRW stable after rising edge of
strobe MCDS
TRW(HO) 10 ns
tsu(WA)
Setup time, write/address MCA stable before falling edge
of strobe MCDS
TWA(SU) 0 ns
th(WA)
Hold time, write address MCA stable after rising edge of
strobe MCDS
TWA(HO) 10 ns
tsu(W)
Setup time, write data stable MCD before rising edge of
strobe MCDS
TWD(SU) 14 ns
th(W)
Hold time, write data stable MCD after rising edge of strobe
MCDS
TWD(HO) 0 ns
tw(WSTB) Pulse duration, write strobe pulse width low on MCDS TWR(STB) 60 ns
th(CS)
Hold time, chip select MCCSH and MCCSL stable before
rising edge of strobe MCDS
TCS(HO) 0 ns
tsu(CS)
Setup time, chip select stable MCCSH and MCCSL before
falling edge of strobe MCDS
TCS(SU) 0 ns
NOTE 2: Timings based upon Mitsubishi 37732S4 (16 MHz) and Mitsubishi 3772S4L (8 MHz).
90%
10%
MCA4–MCA0
MCRW
MCD7–MCD0
10%
MCDS
(see Note A)
tsu(R / W)
th(R / W)
tsu(WA)
10%
10%
90%
tw(WSTB)
th(W)
tsu(CS)
th(CS)
90% 90%
10% 10%
MCCSH
MCCSL
NOTE A: Chip selection is defined as both MCCS and MCDS active.
tsu(WA)
tsu(W)
Figure 3–3. Microcontroller Interface Timing Requirements
(Mitsubishi Configuration Write Cycle, MTS [1:0] = 10)