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HT46RU22

A/D Type 8-Bit MCU

C is a trademark of Philips Semiconductors

Rev. 1.00

July 13, 2006

General Description

The HT46RU22 are 8-bit, high performance, RISC ar-
chitecture microcontroller devices specifically designed
for A/D applications that interface directly to analog sig-
nals, such as those from sensors.

The advantages of low power consumption, I/O flexibil-
ity, programmable frequency divider, timer functions,
oscillator options, multi-channel A/D Converter, Pulse

Width Modulation function, UART function, I

C inter-

face, HALT and wake-up functions, enhance the versa-
tility of these devices to suit a wide range of A/D
application possibilities such as sensor signal process-
ing, motor driving, industrial control, consumer prod-
ucts, subsystem controllers, etc.

Features

Operating voltage:
f

SYS

=4MHz: 2.2V~5.5V

SYS

=8MHz: 3.3V~5.5V

19 bidirectional I/O lines (max.)

1 interrupt input shared with an I/O line

8-bit programmable timer/event counter with
overflow interrupt and 7-stage prescaler

On-chip crystal and RC oscillator

Watchdog Timer

2048

´14 program memory

´8 data memory RAM

Supports PFD for sound generation

HALT function and wake-up feature reduce power
consumption

Up to 0.5

ms instruction cycle with 8MHz system clock

at V

=5V

6-level subroutine nesting

8 channels 9-bit resolution A/D converter

1-channel 8-bit PWM output shared with one I/O line

Universal Asynchronous Receiver Transmitter
(UART)

Bit manipulation instruction

14-bit table read instruction

63 powerful instructions

All instructions in one or two machine cycles

Low voltage reset function

C Bus (slave mode)

24-pin SKDIP/SOP/SSOP package

Technical Document

Tools Information

FAQs

Application Note

HA0004E HT48 & HT46 MCU UART Software Implementation Method

HA0005E Controlling the I2C bus with the HT48 & HT46 MCU Series

HA0013E HT48 & HT46 LCM Interface Design

HA0047E An PWM application example using the HT46 series of MCUs

Block Diagram

Pin Assignment

HT46RU22

Rev. 1.00

July 13, 2006

P A 5 / I N T

O S C 2

O S C 1

R E S

V D D

M U X

P A C

P A

P o r t A

P A 4 / T M R

P o r t D

P o r t B

T M R

T M R C

V S S

P r e s c a l e r

S Y S

P A 4

P r o g r a m

R O M

P r o g r a m

C o u n t e r

I n t e r r u p t

C i r c u i t

S T A C K

I N T C

D A T A

M e m o r y

I n s t r u c t i o n

R e g i s t e r

I n s t r u c t i o n

D e c o d e r

S T A T U S

A L U

S h i f t e r

T i m i n g

G e n e r a t o r

R C O S C

W D T

P r e s c a l e r

M P

P A 3 / P F D

P A 3 , P A 5

P C

P C C

P C 0 / T X , P C 1 / R X

C B u s

S l a v e M o d e

P o r t C

S Y S

/ 4

A C C

L V R

P B

P B C

P A 0 ~ P A 2

P A 3 / P F D

P A 4 / T M R

P A 5 / I N T

P A 6 / S D A

P A 7 / S C L

P B 0 / A N 0 ~

P B 7 / A N 7

P D

P D C

P W M

W D T

P D 0 / P W M

8 - C h a n n e l

A / D C o n v e r t e r

H T 4 6 R U 2 2

2 4 S K D I P - A / S O P - A / S S O P - A

P B 5 / A N 5
P B 4 / A N 4

P A 3 / P F D

P A 2
P A 1
P A 0

P B 3 / A N 3
P B 2 / A N 2
P B 1 / A N 1
P B 0 / A N 0

V S S

P C 0 / T X

P B 6 / A N 6
P B 7 / A N 7
P A 4 / T M R
P A 5 / I N T
P A 6 / S D A
P A 7 / S C L
O S C 2
O S C 1
V D D
R E S
P D 0 / P W M
P C 1 / R X

2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
1 4
1 3

1
2
3
4
5
6
7
8
9
1 0
1 1
1 2

Pad Description

Pad Name

I/O

Options

Description

PA0~PA2
PA3/PFD
PA4/TMR
PA5/INT
PA6/SDA
PA7/SCL

I/O

Pull-high

Wake-up

PA3 or PFD

I/O or Serial Bus

Bidirectional 8-bit input/output port. Each bit can be configured as wake-up
input by options. Software instructions determine the CMOS output or
Schmitt trigger input with or without pull-high resistor (determined by pull-high
options: bit option). The PFD, TMR and INT are pin-shared with PA3, PA4
and PA5, respectively. Once the I

C Bus function is used, the internal regis-

ters related to PA6 and PA7 can not be used.

PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4/AN4
PB5/AN5
PB6/AN6
PB7/AN7

I/O

Pull-high

Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without pull-high resistor (deter-
mined by pull-high option: port option) or A/D input.
Once a PB line is selected as an A/D input (by using software control), the
I/O function and pull-high resistor are disabled automatically.

PC0/TX
PC1/RX

I/O

Pull-high

Bidirectional 2-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without pull-high resistor (deter-
mine by pull-high option: bit option).
TX and RX are pin-shared with PC0 and PC1, once the UART Bus function
is used, the internal registers related to PC0 and PC1 can not be used. Soft-
ware instructions determine the UART function to be used.

PD0/PWM

I/O

Pull-high

I/O or PWM

Bidirectional 1-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without a pull-high resistor (de-
termined by pull-high option: port option). The PWM output function is
pin-shared with PD0 (dependent on PWM options).

OSC1
OSC2

Crystal or RC

OSC1, OSC2 are connected to an RC network or a Crystal (determined by
options) for the internal system clock. In the case of RC operation, OSC2 is
the output terminal for 1/4 system clock.

RES

Schmitt trigger reset input. Active low.

VSS

Negative power supply, ground.

VDD

Positive power supply

TEST1
TEST2
TEST3

TEST mode input pin
It disconnects in normal operation

Absolute Maximum Ratings

Supply Voltage ...........................V

-0.3V to V

+6.0V

Storage Temperature ............................

-50°C to 125°C

Input Voltage..............................V

-0.3V to V

+0.3V

Operating Temperature...........................

-40°C to 85°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.

HT46RU22

Rev. 1.00

July 13, 2006

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

SYS

=4MHz

2.2

5.5

SYS

=8MHz

3.3

5.5

DD1

Operating Current
(Crystal OSC)

No load, f

SYS

=4MHz

ADC disable

0.6

1.5

DD2

Operating Current
(RC OSC)

No load, f

SYS

=4MHz

ADC disable

0.8

1.5

2.5

DD3

Operating Current
(Crystal OSC, RC OSC)

No load, f

SYS

=8MHz

ADC disable

STB1

Standby Current
(WDT Enabled)

No load, system HALT

STB2

Standby Current
(WDT Disabled)

No load, system HALT

IL1

Input Low Voltage for I/O Ports,
TMR and INT

0.3V

IH1

Input High Voltage for I/O Ports,
TMR and INT

0.7V

IL2

Input Low Voltage (RES)

0.4V

IH2

Input High Voltage (RES)

0.9V

LVR

Low Voltage Reset

2.7

3.3

I/O Port Sink Current

=0.1V

I/O Port Source Current

=0.9V

-2

-4

=0.9V

-5

-10

Pull-high Resistance

100

A/D Input Voltage

A/D Conversion Error

±0.5

±1

LSB

ADC

Additional Power Consumption
if A/D Converter is Used

0.5

1.5

HT46RU22

Rev. 1.00

July 13, 2006

A.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

SYS

System Clock
(Crystal OSC, RC OSC)

2.2V~5.5V

400

4000

kHz

3.3V~5.5V

400

8000

kHz

TIMER

Timer I/P Frequency
(TMR)

2.2V~5.5V

4000

kHz

3.3V~5.5V

8000

kHz

WDTOSC

Watchdog Oscillator Period

180

130

RES

External Reset Low Pulse Width

SST

System Start-up Timer Period

Wake-up from HALT

1024

SYS

LVR

Low Voltage Width to Reset

0.25

INT

Interrupt Pulse Width

A/D Clock Period

ADC

A/D Conversion Time

ADCS

A/D Sampling Time

IIC

C Bus Clock Period

Connect to external
pull-high resistor 2k

SYS

Note: *t

SYS

=1/f

SYS

HT46RU22

Rev. 1.00

July 13, 2006

Document Outline

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: HT46RU22

Document Outline

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: HT46RU22