ELAN Home Systems EM78P458, EM78P459AK manual ComparatorOP CharacteristicVdd = 5.0V,Vss=0V,Ta=0 to

EM78P458/459

OTP ROM

6.2AC Electrical Characteristic(Ta=0°C ~ 70 °C, VDD=5V±5%, VSS=0V)

Symbol	Parameter	Conditions	Min	Typ	Max	Unit
Dclk	Input CLK duty cycle		45	50	55	%
Tins	Instruction cycle time	Crystal type	100		DC	ns
	(CLKS="0")	RC type	500		DC	ns
Ttcc	TCC input period		(Tins+20)/N*			ns
Tdrh	Device reset hold time	Ta = 25°C	9	18	30	ms
Trst	/RESET pulse width	Ta = 25°C	2000			ns
Twdt	Watchdog timer period	Ta = 25°C	9	18	30	ms
Tset	Input pin setup time			0		ms
Thold	Input pin hold time			20		ms
Tdelay	Output pin delay time	Cload=20pF		50		ms

*N= selected prescaler ratio.

6.3A/D Converter Characteristic(Vdd=3.0V to 5.5V,Vss=0V,Ta=0 to 70℃)

Symbol	Parameter	Condition	Min.	Typ.	Max.	Unit
VAREF	Analog reference voltage	VAREF - VASS≧2.5V	3.0		Vdd	V
VASS					Vss	V
VAI	Analog input voltage		VASS		VAREF	V
IAI	Analog supply current	Vdd=VAREF=5.0V, VASS =0.0V	500	700	1000	uA
RN	Resolution	Vdd=VAREF=5.0V, VASS =0.0V	6	7	8	Bits
LN	Linearity error	Vdd = 2.5 to 5.5V Ta=25℃	0	±2	±4	LSB
DNL	Differential nonlinear error	Vdd = 2.5 to 5.5V Ta=25℃	0	±0.5	±0.9	LSB
FSE	Full scale error	Vdd=VAREF=5.0V, VASS =0.0V	±0	±2	±4	LSB
OE	Offset error	Vdd=VAREF=5.0V, VASS =0.0V	±0	±1	±2	LSB
ZAI	Recommended impedance of		0	8	10	KΩ
	analog voltage source
TAD	A/D clock period	Vdd=VAREF=5.0V, VASS =0.0V	3	3.5	4	us
TCN	A/D conversion time	Vdd=VAREF=5.0V, VASS =0.0V	10		10	TAD
ADIV	A/D OP input voltage range	Vdd=VAREF=5.0V, VASS =0.0V	0		5	V
ADOV	A/D OP output voltage swing	Vdd=VAREF=5.0V, VASS	0	0.2	0.3	V
		=0.0V,RL=10KΩ	4.7	4.8	5
ADSR	A/D OP slew rate	Vdd=VAREF=5.0V, VASS =0.0V	0.1	0.3		V/us
PSR	Power Supply Rejection	Vdd=5.0V±0.5V	±0		±2	LSB

Note: 1.These parameters are characterized but not tested.

2.These parameters are for design guidance only and are not tested.

3.It will not consume any current other than minor leakage current, when A/D is off.

4.The A/D conversion result never decrease with an increase in the input voltage, and has no missing code.

5.Specifications subject to change without notice.

6.4 Comparator(OP) Characteristic(Vdd = 5.0V,Vss=0V,Ta=0 to 70℃)

	Symbol	Parameter	Condition	Min.	Typ.	Max.	Unit
	SR	Slew rate		0.1	0.2		V/us
This specification is subject to change without prior notice.			58			07.01.2003 (V1.3)