Texas Instruments TCM4300 manual Parameter Alternate MIN MAX Unit, Mcds, Mcrw

3.2TCM4300 to Microcontroller Interface Timing Requirements (Mitsubishi Read Cycle) (see Figure 3±2 and Note 2)

	PARAMETER	ALTERNATE	MIN	MAX	UNIT
		SYMBOL
tsu(R/W)	Setup time, read/write MCRW stable before falling edge of	TRW(SU)	0		ns
	strobe MCDS
th(R/W)	Hold time, read/write MCRW stable after rising edge of	TRW(HO)	10		ns
	strobe MCDS
tsu(RA)	Setup time, read address MCS stable before falling edge of	TRA(SU)	0		ns
	strobe MCDS
th(RA)	Hold time, read address MCA stable after rising edge of	TRA(HO)	10		ns
	strobe MCDS
ten(RD)	Enable time, read data on falling edge of strobe MCDS to	TRD(EN)	10		ns
	TCM4300 driving data bus MCD
tv(R)	Read data valid time on falling edge of strobe MCDS to	TRD(DV)		50	ns
	valid data MCD
tinv	Data MCD invalid after rising edge of strobe MCDS	TRD(INV)		10	ns
tdis(RD)	Disable time, read data. TCM4300 releases MCD data bus	TRD(DIS)		28	ns
	after rising edge of strobe MCDS
th(CS)	Hold time, chip select MCCSH and MCCSL stable before	TCS(HO)	0		ns
	rising edge of strobe MCDS
tsu(CS)	Setup time, chip select MCCSH and MCCSL stable before	TCS(SU)	0		ns
	falling edge of strobe MCDS
NOTE 2: Timings are based upon Mitsubishi 37732S4 (16 MHz) and Mitsubishi 3772S4L (8 MHz).

MCDS	90%		90%
		10%	10%
(see Note A)

MCRW

tsu(R / W) 90%

tsu(RA)

th(R / W)

90%

th(RA)

MCA4±MCA0

MCD7±MCD0

MCCSH

MCCSL

tv(R)	tdis(RD)
ten(RD)	tinv
90%	90%
tsu(CS)	th(CS)
10%	10%

NOTE A: Chip selection is defined as both MCCS and MCDS active.

Figure 3±2. Microcontroller Interface Timing Requirements

(Mitsubishi Configuration Read Cycle, MTS [1:0] = 10)

3±2