Test Load Circuit | Texas Instruments TMS320 specs

TMS32020

SPRS010B Ð MAY 1987 Ð REVISED NOVEMBER 1990

timing requirements over recommended operating conditions (see Note 3)

			MIN NOM	MAX	UNIT

tc(C)	CLKIN cycle time		195	597	ns
tf(CI)	CLKIN fall time			10²	ns
tr(CI)	CLKIN rise time			10²	ns
tw(CIL)	CLKIN low pulse duration, tc(CI) = 50 ns (see Note 4)		40		ns
tw(CIH)	CLKIN high pulse duration, tc(CI) = 50 ns (see Note 4)		40		ns
tsu(S)		setup time before CLKIN low	10	Q ± 10	ns
tsu(S)	SYNC	setup time before CLKIN low	10	Q ± 10	ns
th(S)		hold time from CLKIN low	15		ns
th(S)	SYNC	hold time from CLKIN low	15		ns

²Value derived from characterization data and not tested.

NOTES: 3. Q = 1/4tc(C).

4.CLKIN duty cycle [tr(CI) + tw(CIH)] / tc(CI) must be within 40-60%.

2.15V

	RL = 825 Ω
From Output	Test
Under Test	Test
	Point
	CL = 100 pF

			Figure 3. Test Load Circuit
	2.0	V	VIH (Min)
			VIH (Min)
	1.88	V
	0.92	V	VIL (Max)
	0.80	V	VIL (Max)
	0.80	V
			0
			(a) Input
	2.4	V	VOH (Min)
			VOH (Min)
	2.2	V
	0.8	V	VOL (Max)
	0.6	V	VOL (Max)
	0.6	V
			0

(b) Output

Figure 4. Voltage Reference Levels

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Texas Instruments TMS320 specifications Test Load Circuit

Contents

Description TMS320 SECOND-GENERATION Digital Signal Processors Function PIN Signals DefinitionPGA and PLCC/CER-QUAD PIN Assignments Introduction Wait States for Communication to Slower Off-Chip Key Features TMS32020Bit-Reversed Indexed-Addressing Mode for Memory Space Type ArchitectureTMS320 Second-Generation Device Overview Package SECOND-GENERATION Devices Functional block diagram TMS320C2x Memory control TimerScaling shifter 16 ⋅ 16-bit parallel multiplier Memory Maps TMS320 SECOND-GENERATION Devices Multiprocessing Interrupts and subroutinesExternal interface Addressing modes Repeat featureInstruction set Instruction set summary Instruction SymbolsSymbol Definition TMS320C25 Instruction Set Summary ZAC SUBT²XOR XORK² LTP ² ApacLPH ² LTA Data Memory Operations Mnemonic Description Words TMS320C25 Instruction Set Summary concluded TMS32020 Product Notification TMS32020 Development support Hardware Tools Part Number TMS320 Second-Generation Software and Hardware SupportSoftware Tools Part Number Documentation support Specification overview Parameter Test Conditions MIN TYP§ MAX Unit Recommended operating conditionsMIN NOM MAX Unit External clock option Clock Characteristics and TimingInternal clock option Test Load Circuit Parameter MIN TYP MAX Unit Memory and Peripheral Interface Timing Hold Holda RS, INT, BIO, and XF TimingHold Timing Serial Port Timing TMS320C25GBA INT Clkin / Clkx / ClkrMP/MC IOH Parameter Test Conditions MIN TYP MAX Unit Clkin External Clock Option VOH Min TdC1L-AL Low after CLKOUT1 low Serial Port Timing IPP1 Eprom ProgrammingSee Notes 14 VPP MP/MC VIL INT0 INT2 VIHCLKIN, CLKX, Clkr CLKOUT1, CLKOUT2 Internal Clock Option External clock option Fcrystal TdC1-S From Clkout if Is present TsuIN Setup before CLKOUT1 high MIN TYP MAX Contrast Summary of Electrical SpecificationsClock characteristics and timing Parameter Serial port timing Memory and peripheral interface timingRS, INT, BIO, and XF timing Hold timing Clock timing Timing Diagrams Ready Memory read timingBR, PS, D S CLKOUT1 CLKOUT2 Strb Memory write timing MSC One wait-state memory access timing Iack Reset timing Interrupt timing TMS320C25 Interrupt timing TMS32020 Serial port transmit timing Serial port receive timing External flag timing BIO timing PC = N PC = N + Execute Hold timing part aHold Holda Holda Fetch Hold timing part BCLKOUT1 CLKOUT2 Fetch Execute Or is D15-D0 TdHH-AH TMS320C25FNL Plcc reflow soldering precautions Typical Supply Current Characteristics for TMS320C25 Parameter MAX Unit Mechanical DataPin GB grid array ceramic package TMS32020, TMS320C25 Advance Jedec NO. Outline Terminals MIN MAX Fast programming and verification Programming the TMS320E25 Eprom cell EPT VPP Pin Nomenclature TMS320E25VCC EPT Erasure TMS320E25 Programming Mode LevelsSignal Program Read Output Name ² PIN Verify Inhibit Disable Program verify Fast Programming Flowchart ROM protection and verification Output disableRead VSS Clkin EPT VPP TMS320E25 Protect and Verify Eprom Mode LevelsEprom protect VIH VIL PGM VPP VCC Rbit Eprom VCC VIH VIL PGM VIH/VOH HI-Z VIL/VOL VPP EPT VSS VIH VIL VPP VCC TMS320 SECOND-GENERATION NIL Other Qualified Versions of TMS320C25 Packaging Information Important Notice