Characteristics; A/D Converter Characteristics - Holtek HT46R003B Manual

HT46R003B
Cost-Effective A/D 8-bit OTP MCU
A.C. Characteristics
Symbol Parameter
f System clock
SYS
f System clock (HIRC)
HIRC
f Timer I/P freq�ency (TMR)
TIMER
t Watchdog oscillator period
WDTOSC
t External reset low p�lse width
RES
t External reset low p�lse width (with filter)
RESF
t System start-�p timer period
SST
t Low Voltage Width to Reset
LVR
t System Reset Delay Time (All Reset)
RSD
Note: 1. t = 1/f
SYS SYS
2. To maintain the accuracy of the internal HIRC oscillator frequency, a 0.1μF decoupling capacitor should
be connected between VDD and VSS and located as close to the device as possible.

A/D Converter Characteristics

Symbol Parameter
AV Analog operating voltage
DD
V A/D Inp�t Voltage
AD
DNL A/D Differential Non-linearity
INL A/D Integral non-linearity
Additional Power Cons�mption if
I
ADC
A/D Converter is �sed
t A/D Converter Clock Period
AD
A/D Conversion Time
t
ADC
(Incl�de Sample and Hold Time)
t A/D Converter On-to-Start Time
ON�ST
Note: A/D conversion time (t
AD
clock (t ).
AD
Rev. 1.00
Test Conditions
V
DD
�.3V~5.5V
3V/5V
3V/5V
3.0V~5.5V Ta=0°C~70°C
3.0V~5.5V Ta=-�0°C~85°C
3.3V~5.5V
3V
5V
—
—
—
—
—
Test Conditions
V
DD
— V =V
REF
—
�.7V
V =V
REF
3V
t =0.5μs
AD
5V
�.7V
V =V
REF
3V
t =0.5μs
AD
5V
3V
No load (t
5V
�.7V~5.5V
�.7V~5.5V 1�-bit A/D Converter
�.7V~5.5V
) = n (bits ADC) + 4 (sampling time), the conversion for each bit needs one ADC
�
Min. Typ.
Conditions
—
Ta=�5°C -�%
Ta=0°C~70°C -5%
-8%
-1�%
— 0
— �5 �0
— 3� 65
— 1
— — 150
Wake-�p from halt — 16
— 0.�5
— �5 50
Min. Typ.
Conditions
�.7 —
DD
— 0 —
=AV
DD DD
-� —
=AV
DD DD
-� —
— 0.5
=0.5μs)
AD
— 0.6
— 0.5 —
— 16
— � —
Ta=�5°C
Max. Unit
8 MHz
8 +�% MHz
8 +5% MHz
8 +8% MHz
8 +1�% MHz
— 8 MHz
180 μs
130 μs
— — μs
— ns
— t
SYS
1 � ms
100 ms
Ta=�5°C
Max. Unit
5.5 V
AV /V V
DD REF
+� LSB
+� LSB
— mA
— mA
10 μs
— t
AD
— μs
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