EM78P458/459
OTP ROM
6.2 AC Electrical Characteristic(Ta=0°C ~ 70 °C, VDD=5V±5%, VSS=0V)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Dclk
Input CLK duty cycle
Instruction cycle time
(CLKS="0")
45
50
55
DC
DC
%
ns
ns
ns
ms
ns
ms
ms
ms
ms
Crystal type
RC type
100
Tins
500
(Tins+20)/N*
9
Ttcc
Tdrh
Trst
Twdt
Tset
Thold
Tdelay
TCC input period
Device reset hold time
18
30
30
Ta = 25°C
Ta = 25°C
Ta = 25°C
/RESET pulse width
Watchdog timer period
Input pin setup time
Input pin hold time
2000
9
18
0
20
50
Output pin delay time
Cload=20pF
*N= selected prescaler ratio.
6.3 A/D Converter Characteristic(Vdd=3.0V to 5.5V,Vss=0V,Ta=0 to 70℃)
Symbol
VAREF
VASS
VAI
Parameter
Condition
Min.
Typ.
Max.
Vdd
Vss
VAREF
1000
8
Unit
V
3.0
VAREF - VASS≧2.5V
Analog reference voltage
V
Analog input voltage
Analog supply current
Resolution
VASS
500
6
0
0
±0
±0
V
uA
Bits
LSB
LSB
LSB
LSB
IAI
Vdd=VAREF=5.0V, VASS =0.0V
Vdd=VAREF=5.0V, VASS =0.0V
Vdd = 2.5 to 5.5V Ta=25℃
Vdd = 2.5 to 5.5V Ta=25℃
Vdd=VAREF=5.0V, VASS =0.0V
Vdd=VAREF=5.0V, VASS =0.0V
700
7
±2
±0.5
±2
±1
RN
LN
DNL
FSE
OE
Linearity error
±4
Differential nonlinear error
±0.9
±4
±2
Full scale error
Offset error
Recommended impedance of
analog voltage source
A/D clock period
ZAI
0
8
10
KΩ
TAD
TCN
ADIV
Vdd=VAREF=5.0V, VASS =0.0V
Vdd=VAREF=5.0V, VASS =0.0V
Vdd=VAREF=5.0V, VASS =0.0V
Vdd=VAREF=5.0V, VASS
3
10
0
3.5
4
10
5
0.3
5
us
TAD
V
A/D conversion time
A/D OP input voltage range
0
0.2
4.8
0.3
ADOV A/D OP output voltage swing
V
=0.0V,RL=10KΩ
4.7
0.1
±0
ADSR
PSR
A/D OP slew rate
Power Supply Rejection
Vdd=VAREF=5.0V, VASS =0.0V
Vdd=5.0V±0.5V
V/us
LSB
±2
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.
This specification is subject to change without prior notice.
57
06.25.2004 (V1.4)
ELAN [ ELAN MICROELECTRONICS CORP ]
