Z8F042AHH020EG Zilog, Z8F042AHH020EG Datasheet - Page 151

• Manufacturer Part Number: Z8F042AHH020EG
• Description: IC ENCORE XP MCU FLASH 4K 20SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHH020EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4156; Z8F042AHH020EG

PS022517-0508
5. After the first bit has been shifted out, a Transmit Interrupt is asserted.
6. Software responds by writing the lower eight bits of address to the I
7. The I
8. If the I
9. The I
10. The I
11. Software responds by setting the START bit of the I
12. Software responds by writing 11110B followed by the 2-bit Slave address and a 1
13. If only one byte is to be read, software sets the NAK bit of the I
14. After the I
15. The I
16. The I
17. The I
18. The I
during the next high period of SCL, the I
Status register. Continue with
If the slave does not acknowledge the first address byte, the I
NCKI bit and clears the ACK bit in the I
Not Acknowledge interrupt by setting the STOP and FLUSH bits and clearing the TXI
bit. The I2C Controller sends the STOP condition on the bus and clears the STOP and
NCKI bits. The transaction is complete (ignore following steps).
Register (second address byte).
I
repeated START and by clearing the TXI bit.
(read) to the I
acknowledge by pulling the SDA signal low during the next high period of SCL, the
I
If the slave does not acknowledge the second address byte, the I
NCKI bit and clears the ACK bit in the I
Not Acknowledge interrupt by setting the STOP and FLUSH bits and clearing the TXI
bit. The I2C Controller sends the STOP condition on the bus and clears the STOP and
NCKI bits. The transaction is complete (ignore the following steps).
Register (third address transfer).
slave read address and a 1 (read).
high period of SCL.
If the slave were to Not Acknowledge at this point (this should not happen because the
slave did acknowledge the first two address bytes), software would respond by setting
the STOP and FLUSH bits and clearing the TXI bit. The I2C Controller sends the
2
2
C Controller generates a Transmit Interrupt.
C Controller sets the ACK bit in the I
2
2
2
2
2
2
2
C Controller completes shifting of the two address bits and a 0 (write).
C Controller loads the I
C Controller shifts out the second address byte. After the first bit is shifted, the
C Controller sends the repeated START condition.
C Controller loads the I
C Controller sends
C Slave sends an acknowledge by pulling the SDA signal Low during the next
2
C Slave acknowledges the first address byte by pulling the SDA signal low
2
C Controller shifts out the 2nd address byte, the I
2
C Data Register.
11110B
2
2
step
C Shift register with the contents of the I
C Shift register with the contents of the I
followed by the two most significant bits of the
9.
2
C Status register. Continue with step 15.
2
2
2
C Status register. Software responds to the
C Status register. Software responds to the
C Controller sets the ACK bit in the I
Z8 Encore! XP
2
C Control Register to generate a
Product Specification
2
2
C Slave sends an
C Controller sets the
2
2
C Controller sets the
C Control Register.
2
®
C Data Register.
F0822 Series
2
2
C Data
C Data
I2C Controller
2
C
138