HT45F4M View Datasheet(PDF) - Holtek Semiconductor

Part Name

Description

Manufacturer

HT45F4M

Lithium Battery Backup Power ASSP MCU

Holtek Semiconductor 

HT45F4M

Lithium Battery Backup Power ASSP MCU

Symbol

Parameter

Test Conditions

VDD

Conditions

Min. Typ. Max. Unit

System Reset Delay Time

(Power On Reset)

—

tRSTD

System Reset Delay Time

(Any Reset except Power On

—

Reset)

—

25

50

100 ms

—

8.3

16.7 33.3 ms

Note: 1. tSYS= 1/fSYS; tSUB = 1/fSUB

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.

ADC Electrical Characteristics

Symbol

Parameter

Test Conditions

VDD

Conditions

VADI

A/D Converter Input Voltage

—

—

VREF

A/D Converter Reference Voltage —

—

VBG

Reference Voltage

—

—

DNL

Differential Non-linearity

5V tADCK= 1.0μs

INL

Integral Non-linearity

5V tADCK= 1.0μs

IADC

Additional Power Consumption

if A/D Converter is used

3V No load (tADCK= 0.5μs )

5V No load (tADCK= 0.5μs )

IBG

Additional Power Consumption

if VBG Reference with Buffer is used

—

—

tADCK

A/D Converter Clock Period

—

—

tADC

A/D Conversion Time

(Include Sample and Hold Time)

— 12 bit ADC

tADS

A/D Converter Sampling Time

—

—

tON2ST A/D Converter On-to-Start Time

—

—

tBGS

VBG Turn on Stable Time

—

—

Ta= 25°C

Min. Typ. Max. Unit

0

—

VREF

V

2

—

VDD

V

-3% 1.25 +3% V

— ±1 ±2 LSB

— ±2 ±4 LSB

— 0.9 1.35 mA

— 1.2 1.8 mA

— 200 300 μA

0.5 — 10 μs

—

16

—

tADCK

—

4

2

—

200 —

—

tADCK

— μs

— μs

Rev. 1.10

12

January 15, 2013

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