NEC PD75P308 user manual Other than X1 or

μPD75P308

DC PROGRAMMING CHARACTERISTICS (Ta = 25 ±5°C, VDD = 6.0±0.25V, VPP = 12.5±0.3V, VSS = 0V)

Parameter	Symbol	Conditions	MIN.	TYP.	MAX.	Unit
High-Level Input Voltage	VIH1	Other than X1 or X2	0.7 VDD		VDD	V
	VIH2	X1 and X2	VDD –0.5		VDD	V
Low-Level Input Voltage	VIL1	Other than X1 or X2	0		0.3 VDD	V
	VIL2	X1 and X2	0		0.4	V
Input Leakage Current	ILI	VIN = VIL or VIH			10	μA
High-Level Output Voltage	VOH	IOH = –1 mA	VDD –1.0			V
Low-Level Output Voltage	VOL	IOL = 1.6 mA			0.4	V
VDD Supply Current	IDD				30	mA
VPP Supply Current	IPP	MD0 = VIL, MD1 = VIH			30	mA

Notes 1: VPP must not exceed +13.5 V, including the overshoot.

2: Apply VDD before VPP and disconnect it after VPP.

AC PROGRAMMING CHARACTERISTICS (Ta = 25±5°C, VDD = 6.0±0.25V, VPP = 12.5±0.3V, VSS = 0V)

	Parameter	Symbol	*1	Conditions	MIN.	TYP.	MAX.	Unit
	Address Set-Up Time*2 (vs.MD0↓)	tAS	tAS		2			μs
	MD1 Set-Up Time (vs. MD0↓)	tM1S	tOES		2			μs
	Data Set-Up Time (vs. MD0↓)	tDS	tDS		2			μs
	Address Hold Time*2 (vs.MD0−)	tAH	tAH		2			μs
	Data Hold Time (vs. MD0−)	tDH	tDH		2			μs
	MD0 −→ Data Output Float Delay Time	tDF	tDF		0		130	ns
	VPP Set-Up Time (vs. MD3−)	tVPS	tVPS		2			μs
	VDD Set-Up Time (vs. MD3−)	tVDS	tVCS		2			μs
	Initial Program Pulse Width	tPW	tPW		0.95	1.0	1.05	ms
	Additional Program Pulse Width	tOPW	tOPW		0.95		21.0	ms
	MD0 Set-Up Time (vs. MD1−)	tMOS	tCES		2			μs
	MD0 ↓→ Data Output Delay Time	tDV	tDV	MD0 = MD1 = VIL			1	μs
	MD1 Hold Time (vs. MD0−)	tM1H	tOEH	tM1H + tM1R ≥ 50 μs	2			μs
	MD1 Recovery Time (vs. MD0↓)	tM1R	tOR		2			μs
	Program Counter Reset Time	tPCR	–		10			μs
	X1 Input High-/Low- Level Width	tXH,tXL	–		0.125			μs
	X1 Input Frequency	fX	–				4.19	MHz
	Initial Mode Set Time	tI	–		2			μs
	MD3 Set-Up Time (vs. MD1−)	tM3S	–		2			μs
	MD3 Hold Time (vs. MD1↓)	tM3H	–		2			μs
	MD3 Set-Up Time (vs. MD0↓)	tM3SR	–	When data is read from program memory	2			μs
★	Address*2 → Data Output Delay Time	tDAD	tACC	When data is read from program memory			2	μs
	Address*2 → Data Output Hold Time	tHAD	tOH	When data is read from program memory	0		130	ns
	MD3 Hold Time (vs. MD0−)	tM3HR	–	When data is read from program memory	2			μs
★
	MD3 ↓→ Data Output Float Delay Time	tDFR	–	When data is read from program memory			2	μs

*1: These symbols are the corresponding μPD27C256 symbols.

2: The internal address signal is incremented by 1 at the fourth rising edge of X1 input. The internal address is not connected to any pin.

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