48R01A3 データシートの表示（PDF） - Holtek Semiconductor

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48R01A3

Small Package I/O Type 8-Bit OTP MCU

Holtek Semiconductor 

HT48R01A

Device Markings

A suffix with the number 1, 2 or 3 will be added to each of the part numbers and printed on the package. The suffix num-

ber denotes the fixed oscillation frequency of the internal RC oscillator as shown.

Part No.

HT48R01A

Device Marking

48R01A1

48R01A2

48R01A3

Internal RC Oscillator Frequency

4MHz

8MHz

12MHz

Block Diagram

The following block diagram illustrates the main functional blocks.

O TP

P r o g r a m m in g

C ir c u itr y

I/O

P o rts

O TP

P ro g ra m

M e m o ry

S ta c k

R A M D a ta

M e m o ry

W a tc h d o g

T im e r

8 - b it

R IS C

M CU

C o re

W a tc h d o g

T im e r O s c illa to r

R eset

C ir c u it

In te rru p t

C o n tr o lle r

T im e r

B uzzer

D r iv e r

Low

V o lta g e

R eset

R C /C ry s ta l

O s c illa to r

In te rn a l

O s c illa to r

Pin Assignment

P A 3 /IN T

P A 2 /T M R 0

P A 1 /B Z

P A 0 /B Z

VSS

1

10

2

9

3

8

4

7

5

6

H T48R 01A

1 0 M S O P -A

PA4

P A 5 /O S C 2

P A 6 /O S C 1

P A 7 /R E S

VDD

Rev. 1.10

2

August 4, 2008

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