HT67F60 datasheet(165/242 Pages) HOLTEK

165 / 242 page

HT67F30/HT67F40/HT67F50/HT67F60

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

Rev. 1.50

164

March 06 , 2012

Rev. 1.50

165

March 06 , 2012

●

SIMC0 Register

Bit

Name

SIM2

SIM1

SIM0

PCKEN

PCKP1

PCKP0

SIMEN

—

R/W

—

POR

—

Bit 7~5

SIM2, SIM1, SIM0: SIM Operating Mode Control

000: SPI master mode; SPI clock is fSYS/4

001: SPI master mode; SPI clock is fSYS/16

010: SPI master mode; SPI clock is fSYS/64

011: SPI master mode; SPI clock is fTBC

100: SPI master mode; SPI clock is TM0 CCRP match frequency/2

101: SPI slave mode

110: I2C slave mode

111: Unused mode

These bits setup the overall operating mode of the SIM function. As well as selecting

if the I2C or SPI function, they are used to control the SPI Master/Slave selection and

the SPI Master clock frequency. The SPI clock is a function of the system clock but

can also be chosen to be sourced from the TM0. If the SPI Slave Mode is selected then

the clock will be supplied by an external Master device.

Bit 4

PCKEN: PCK Output Pin Control

0: Disable

1: Enable

Bit 3~2

PCKP1, PCKP0: Select PCK output pin frequency

00: fSYS

01: fSYS/4

10: fSYS/8

11: TM0 CCRP match frequency/2

Bit 1

SIMEN: SIM Control

0: Disable

1: Enable

The bit is the overall on/off control for the SIM interface. When the SIMEN bit is

cleared to zero to disable the SIM interface, the SDI, SDO, SCK and SCS, or SDA and

SCL lines will be in a floating condition and the SIM operating current will be reduced

to a minimum value. When the bit is high the SIM interface is enabled. The SIM

configuration option must have first enabled the SIM interface for this bit to be

effective. If the SIM is configured to operate as an SPI interface via the SIM2~SIM0

bits, the contents of the SPI control registers will remain at the previous settings when

the SIMEN bit changes from low to high and should therefore be first initialised by the

application program. If the SIM is configured to operate as an I2C interface via the

SIM2~SIM0 bits and the SIMEN bit changes from low to high, the contents of the I2C

control bits such as HTX and TXAK will remain at the previous settings and should

therefore be first initialised by the application program while the relevant I2C flags

such as HCF, HAAS, HBB, SRW and RXAK will be set to their default states.

Bit 0

unimplemented, read as "0"

HT67F60 Datasheet(PDF) 165 Page - Holtek Semiconductor Inc

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