TCM4300 Datasheet, PDF (29/69 Pages) Texas Instruments – Advanced RF Cellular Telephone Interface Circuit (ARCTIC )

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)
0
ns
th(R/W)
Hold time, read/write MCRW stable after rising edge of
strobe MCDS
TRW(HO)
10
ns
tsu(RA)
Setup time, read address MCA stable before falling edge of
strobe MCDS
TRA(SU)
0
ns
th(RA)
Hold time, read address MCA stable after rising edge of
strobe MCDS
TRA(HO)
10
ns
Enable time, read data on falling edge of strobe MCDS to
ten(RD) _{TCM4300 driving data bus MCD}
TRD(EN)
10
ns
tv(RD)
Valid time, read data on falling edge of strobe MCDS to
valid data MCD
TRD(DV)
50 ns
tinv
tdis(RD)
Data (MCD) invalid after rising edge of strobe MCDS
Disable time, read data. TCM4300 releases MCD data bus
after rising edge of strobe MCDS
TRD(INV)
TRD(DIS)
10 ns
28 ns
th(CS)
Hold time, chip select MCCSH and MCCSL stable before
falling edge of strobe MCDS
TCS(HO)
0
ns
tsu(CS)
Setup time, chip select stable MCCSH and MCCSL before
rising edge of strobe MCDS
TCS(SU)
0
ns
NOTE 4: Timings are based upon Motorola 68HC000 (16.67 MHz) and Motorola 68302 (16 MHz).
MCDS
(see Note A)
MCRW
tsu(R _{/ W)}
90%
90%
10%
90%
10%
th(R _{/ W)}
90%
MCA0–MCA4
tsu(RA)
th(RA)
MCD0–MCD7
MCCSH
ten(RD)
90%
ÏÏÏÏ^tv(RD)
tsu(CS)
tinv
ÏÏÏÏ ^tdis(RD)
90%
th(CS)
MCCSL
10%
10%
NOTE A: Chip selection is defined as both MCCS and MCDS active.
Figure 3–6. Microcontroller Interface Timing Requirements
(Motorola 16-Bit Read Cycle, MTS [1:0] = 10)
3–7