Z8F6421PM020SC Datasheet, PDF (53/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Z8 Encore!
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I2C Control
I2CCTL (F52H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
I2C Signal Filter Enable
0 = Digital filtering disabled
1 = Low-pass digital filters enabled
on SDA and SCL input signals
Flush Data
0 = No effect
1 = Clears I2C Data register
Send NAK
0 = Do not send NAK
1 = Send NAK after next byte received
from slave
Enable TDRE Interrupts
0 = Do not generate an interrupt when
the I2C Data register is empty
1 = Generate an interrupt when the I2C
Transmit Data register is empty
Baud Rate Generator Interrupt Request
0 = Interrupts behave as set by I2C
control
1 = BRG generates an interrupt when
it counts down to zero
Send Stop Condition
0 = Do not issue Stop condition after
data transmission is complete
1 = Issue Stop condition after data
transmission is complete
Send Start Condition
0 = Do not send Start Condition
1 = Send Start Condition
I2C Enable
0 = I2C is disabled
1 = I2C is enabled
I2C Baud Rate Generator High Byte
I2CBRH (F53H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
I2C Baud Rate divisor [15:8]
SPI Data
SPIDATA (F60H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
SPI Data [7:0]
SPI Control
SPICTL (F61H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
SPI Enable
0 = SPI disabled
1 = SPI enabled
Master Mode Enabled
0 = SPI configured in Slave mode
1 = SPI configured in Master mode
Wire-OR (open-drain) Mode Enabled
0 = SPI signals not configured for
open-drain
1 = SPI signals (SCK, SS, MISO, and
MOSI) configured for open-drain
Clock Polarity
0 = SCK idles Low
1 = SPI idles High
Phase Select
Sets the phase relationship of the data
to the clock.
BRG Timer Interrupt Request
0 = BRG timer function is disabled
1 = BRG time-out interrupt is enabled
Start an SPI Interrupt Request
0 = No effect
1 = Generate an SPI interrupt request
Interrupt Request Enable
0 = SPI interrupt requests are disabled
1 = SPI interrupt requests are enabled
I2C Baud Rate Generator Low Byte
I2CBRL (F54H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
I2C Baud Rate divisor [7:0]
PS019915-1005
Control Register Summary