TCM4300 Datasheet, PDF (31/69 Pages) Texas Instruments – Advanced RF Cellular Telephone Interface Circuit (ARCTIC )

3.8 TCM4300 to Microcontroller Interface Timing Requirements (Motorola 8-Bit
Read Cycle) (see Figure 3–8 and Note 5)
PARAMETER
ALTERNATE
SYMBOL
MIN MAX UNIT
tsu(R/W)
Setup time, read/write MCRW stable before rising edge of
strobe MCDS
TRW(SU)
0
ns
th(R/W)
Hold time, read/write MCRW stable after falling edge of
strobe MCDS
TRW(HO)
10
ns
tsu(RA)
Setup time, read address MCA stable before rising edge of
strobe MCDS
TRA(SU)
0
ns
th(RA)
Hold time, read address MCA stable after falling edge of
strobe MCDS
TRA(HO)
10
ns
ten(RD)
Enable time, read data on rising edge of strobe MCDS to
TCM4300 driving data bus MCD
TRD(EN)
10
ns
tv(RD)
Valid time, read data on rising edge of strobe MCDS to valid
data MCD
TRD(DV)
50 ns
tinv
tdis(RD)
Data MCD invalid after falling edge of strobe MCDS
Disable time, read data. TCM4300 releases MDS data bus
after falling 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 MCCSH and MCCSL stable before
rising edge of strobe MCDS
TCS(SU)
0
ns
NOTE 5: Timings are based upon Motorola 68HC11D3 (3 MHz) and Motorola 68HC11G5 (2.1 MHz).
MCDS
(see Note A)
MCRW
10%
tsu(R _{/ W)}
90%
90%
90%
10%
th(R _{/ W)}
90%
MCA0–MCA4
tsu(RA)
th(RA)
MCD0–MCD7
MCCSH
ten(RD)
90%
tv(RD)
ÏÏÏÏ
th(CS)
tdis(RD)
t(inv)
ÏÏ
90%
tsu(CS)
MCCSL
10%
NOTE A: Chip selection is defined as both MCCS and MCDS active.
10%
Figure 3–8. Microcontroller Interface Timing Requirements
(Motorola 8-Bit Read Cycle, MTS [1:0] = 01)
3–9