HT67F60 datasheet(178/242 Pages) HOLTEK

178 / 242 page

Rev. 1.50

178

March 06 , 2012

Rev. 1.50

179

March 06 , 2012

HT67F30/HT67F40/HT67F50/HT67F60

TinyPowerTM A/D Flash Type 8-Bit MCU with LCD & EEPRO

St ar t

HA AS= 1

HT X= 1

SR W= 1

Ye s

R XAK =1

Ye s

R ead fr om

SI MD t o re l eas e

SC L lin e

RE TI

Ye s

Du mm y r ead fr om

SI MD t o re l eas e

SC L Li ne

RE TI

Wr it e dat a to S IM D

re l eas e SC L Li ne

SE T HT X

Wr it e dat a to S IM D

to r el eas e SC L Li ne

RE TI

CL R HT X

CL R T XAK

Du mm y r ead fr om

SI MD t o re l eas e

SC L Li ne

CL R HT X

CL R TX AK

RE TI

I2C Bus ISR Flow Chart

Serial Interface – SPIA

The devices contain an independent SPI function. It is important not to confuse this independent SPI

function with the additional one contained within the combined SIM function, which is described in

another section of this datasheet. This independent SPI function will carry the name SPIA to

distinguish it from the other one in the SIM.

The SPI interface is often used to communicate with external peripheral devices such as sensors,

Flash or EEPROM memory devices etc. Originally developed by Motorola, the four line SPI

interface is a synchronous serial data interface that has a relatively simple communication protocol

simplifying the programming requirements when communicating with external hardware devices.

The communication is full duplex and operates as a slave/master type, where the device can be

either master or slave. Although the SPIA interface specification can control multiple slave devices

from a single master, however this device is provided with only one SCSA pin. If the master needs

to control multiple slave devices from a single master, the master can use I/O pins to select the slave

devices.

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