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4XR01T3V130 Datasheet(PDF) 10 Page - Holtek Semiconductor Inc

Part No. 4XR01T3V130
Description  8-Bit OTP MCU with RF Transmitter
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Maker  HOLTEK [Holtek Semiconductor Inc]
Homepage  http://www.holtek.com
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 10 page
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Power-on Reset Characteristics
Ta=25
°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Conditions
VPOR
VDD Start Voltage to Ensure
Power-on Reset
¾¾
¾
¾
100
mV
RRVDD
VDD raising rate to Ensure
Power-on Reset
¾¾
0.035
¾¾
V/ms
VPOR MAX
Maximum VDD Start Voltage to
Ensure Power-on Reset
¾
Ta=25
°C,
without 0.1
mF between
VDD and VSS
0.9
¾
1.5
V
Ta=-40
°C~85°C,
without 0.1
mF between
VDD and VSS
0.6
¾
1.8
V
tPOR
Power-on Reset Low Pulse
Width
¾
without 0.1
mF between
VDD and VSS
2
¾¾
ms
without 0.1
mF between
VDD and VSS
TBD
¾¾
ms
Functional Description
As these device packages contain different chips, for a detailed functional description, users must refer
to the relevant datasheets for the related MCU. The following table shows which individual devices
are inside each package.
Device
MCU
HT48R01T3
HT48R01B
HT46R01T3
HT46R01B
Multi-chip Internal Devices
The MCU controls the RF transmitter via a two line interface using two of its I/O pins, PB0 and PB1.
Pin PB1, which should be setup as an output by the MCU, is used to generate the encoding data. Pin
PB0, which should be setup as an input by the MCU, is used for synchronising purposes. There are
some special considerations which need to be taken into account when using these devices. These
points will be mentioned in the hardware and software consideration sections.
Hardware Considerations
As these devices are composed of an individual MCU and RF Transmitter, using them together
requires the user to take care of some special points.
Rev. 1.30
10
November 23, 2010
HT46R01T3/HT48R01T3
8-Bit OTP MCU with RF Transmitter
T i m e
V D D
V P O R
R R V D D
t P O R




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