TCM4300IPZ datasheet(29/69 Pages) TI1

29 / 69 page

3–7

3.6

TCM4300 to Microcontroller Interface Timing Requirements (Motorola

16-Bit Read Cycle) (see Figure 3–6 and Note 4)

PARAMETER

ALTERNATE

SYMBOL

MIN

MAX

UNIT

tsu(R/W)

Setup time, read/write MCRW stable before falling edge of

strobe MCDS

TRW(SU)

th(R/W)

Hold time, read/write MCRW stable after rising edge of

strobe MCDS

TRW(HO)

tsu(RA)

Setup time, read address MCA stable before falling edge of

strobe MCDS

TRA(SU)

th(RA)

Hold time, read address MCA stable after rising edge of

strobe MCDS

TRA(HO)

ten(RD)

Enable time, read data on falling edge of strobe MCDS to

TCM4300 driving data bus MCD

TRD(EN)

tv(RD)

Valid time, read data on falling edge of strobe MCDS to

valid data MCD

TRD(DV)

tinv

Data (MCD) invalid after rising edge of strobe MCDS

TRD(INV)

tdis(RD)

Disable time, read data. TCM4300 releases MCD data bus

after rising edge of strobe MCDS

TRD(DIS)

th(CS)

Hold time, chip select MCCSH and MCCSL stable before

falling edge of strobe MCDS

TCS(HO)

tsu(CS)

Setup time, chip select stable MCCSH and MCCSL before

rising edge of strobe MCDS

TCS(SU)

NOTE 4: Timings are based upon Motorola 68HC000 (16.67 MHz) and Motorola 68302 (16 MHz).

MCA0–MCA4

MCD0–MCD7

MCDS

(see Note A)

MCRW

tsu(RA)

10%

90%

10%

90%

tsu(R / W)

th(RA)

tv(RD)

ten(RD)

tdis(RD)

tinv

tsu(CS)

th(CS)

MCCSH

MCCSL

90%

10%

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

th(R / W)

Figure 3–6. Microcontroller Interface Timing Requirements

(Motorola 16-Bit Read Cycle, MTS [1:0] = 10)

TCM4300IPZ Datasheet(PDF) 29 Page - Texas Instruments

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