HT56R678 datasheet(2/104 Pages) HOLTEK

2 / 104 page

Selection Table

Most features are common to all devices, the main feature distinguishing them are Program Memory capacity, I/O count,

stack capacity and package types. The following table summarises the main features of each device.

Part No.

VDD

Program

Memory

Data

Memory

I/O

LCD

Timer

A/D

PWM

Stack

Package

8-bit 16-bit

HT56R67

2.2V~

5.5V

32K

´16

2304

´8

´4

´3

12-bit

´8 12-bit´4

52QFP,

64LQFP,

100QFP

HT56R668

2.2V~

5.5V

16K

´16

2304

´8

´16

´8

12-bit

´8 12-bit´4

100QFP,

128QFP

HT56R678

32K

´16

Note:

1. The devices are only available in OTP versions.

2. For devices that exist in more than one package formats, the table reflects the situation for the larger

package.

Block Diagram

HT56R67/HT56R668/HT56R678

Rev. 1.10

September 14, 2009

O T P

P r o g r a m m i n g

C i r c u i t r y

W a t c h d o g

T i m e r

W a t c h d o g

T i m e r O s c i l l a t o r

8 - b i t

R I S C

M C U

C o r e

R e s e t

C i r c u i t

I n t e r r u p t

C o n t r o l l e r

E x t e r n a l

R C / C r y s t a l

O s c i l l a t o r

A / D

C o n v e r t e r

P r o g r a m m a b l e

F r e q u e n c y

G e n e r a t o r

P W M

G e n e r a t o r

E x t e r n a l R T C

O s c i l l a t o r

I n t e r n a l R C

O s c i l l a t o r

I / O

P o r t s

R A M

D a t a

M e m o r y

O T P

P r o g r a m

M e m o r y

S t a c k

L C D / L E D

D r i v e r

I 2 C / S P I

T i m e r s

L o w

V o l t a g e

R e s e t

L o w

V o l t a g e

D e t e c t

HT56R678 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

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