HT56C668 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

HT56C668

2.2V~

5.5V

16K

´16

2304

´8

´16

´8

12-bit

´8 12-bit´4

100QFP,

128QFP

HT56R678

HT56C678

32K

´16

HT56R688*

48K

´16

* Under development, available in 3Q, 2010

Note:

1. Part numbers including a

²C² are mask version devices while ²R² are OTP decives.

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

package.

Block Diagram

HT56R67/HT56R668/HT56C668/HT56R678/HT56C678/HT56R688

Rev. 1.20

March 4, 2010

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

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