HT46R23/HT46C23 A/D Type
Revision # 2.11 Modifications
made on December 29, 2008
- The Instruction Set section was modified.
- The Instruction Definition section was modified.
- The Package Information section was modified.
- The Product Tape and Reel Specifications section was modified.
Revision # 2.10 Modifications
made on July 25, 2007
- A Technical Document section HA0075E was added.
- In the Reset Section the Reset Circuit Diagram was modified.
- The Application Circuits section was modified.
Revision # 2.00 Modifications
made on November 24, 2005
- The Watchdog Timer diagram was modified.
- In the Options section, the WDT time-out period was
Revision # 1.90 Modifications
made on July 13, 2005
- In the Oscillator Configuration section, the System
Oscillator diagram was modified.
Revision # 1.80 Modifications
made on July 5, 2005
- A Technical Document section was added.
- Pad Assignment section was deleted.
- The INTC0 (0BH) Register table, the Bit 7 function was
- The TMRC Register table, the TE function was modified.
- The A/D Converter section was modified.
# 1.70 Modifications made on September 21, 2004
- At the
table, the IDD3 Parameter, as well as Typ. and Max.
Conditions were modified.
- At the
table below the
Application Circuits section, the entries of the column for Crystal
or Resonator were modified. A brief functional description for R1
was added at the bottom portion of the table.
# 1.60 Modifications made on May 3, 2004
- The Product Title
was modified from 8-Bit A/D Type MCU to A/D Type 8-Bit MCU.
- At the Block
Diagram section, the TMR and TMRC portion of the diagram were
- At the D.C.
Characteristics table, the Min. value for the RPH 3V was
changed from 40kW to 20kW and the Max. value from 80kW to 100kW
# 1.50 Modifications made on February 3, 2004
- At the Features section,
8-bit accuracy was deleted and (6+2) (7+1) bit was changed to
the Block Diagram, the label SYS CLK/4 was modified to fSYS/4.
Timer/Event Counter diagram was modified.
the Low Voltage Reset section, the specs (0.9V~3.3V) was
changed to (0.9V~VLVR). Then the diagram showing
the relationship between VDD and VLVR, VDD:
3.3V was changed to 3.0V and VOPR: 3.0V was changed
# 1.41 Modifications made on December 16, 2003
- At the Instruction Set
Summary and Instruction Definition sections, the missing TABRDL [m]
instructions were added back.
# 1.40 Modifications made on September 3, 2003
- The PD flag label was
changed to PDF flag.
Application Circuits were modified.
- The recommended RESET circuitry
For reasons of stability and noise immunity, the 2-resistor/2-capacitor or 2-resistor/1-capacitor recommended circuits are an improvement over the 1-resistor/1-capacitor circuit. The choice of which circuit is used depends upon the user application. For example, for battery powered applications the single resistor and single capacitor circuit may be adequate whereas for applications such as home appliances, industrial control applications or for circuits which are close to electrical noise sources, the 2-resistor/2-capacitor circuit may be the better choice.
- The Crystal OSC application circuitry
was also modified
recommended additional resistor has been added to ensure
that the oscillator will cease to function when the supply
voltage falls below 2.2V to prevent microcontroller
malfunctions. This is because of instabilities in the
oscillator at supply voltages of less than 2.2V.
- The Instruction
Definition section was modified, with the first two columns deleted.
# 1.30 Modifications made on March 26, 2003
- At the Features
Characteristics table and other related sections, the Operating
voltage range of 4.5V~5.5V at fSYS=8MHz was changed to
- At the Absolute Maximum
Ratings section, the Supply Voltage range of
VSS-0.3V to VSS+5.5V was changed to VSS-0.3V
- The D.C.
Characteristics table was modified.
- The A.C.
Characteristics table was modified, with tADCS added and
the values for tWDTOSC modified.
- The 6+2 and 7+1 PWM
mode diagrams were modified.
- The A/D conversion
timing diagram was modified.
- Two programming
examples on how to setup and implement A/D conversion were added.
- The two I2C
flowcharts were modified.
- The Application Circuits diagram was modified.
# 1.20 Modifications made on November 20, 2002
- At the Interrupt
Priority table, Serial bus
interrupt was added.
# 1.10 Modifications made on September 24, 2002
- At the Input/Output
ports section, brief function descriptions were added, particularly
to PA3 and PD0 data registers.
# 1.00 This was posted on August 26, 2002
- HT46R23 and HT46C23 datasheets were combined. Revision number
restarted from 1.00.