Z8F6421AN020EC00TR Zilog, Z8F6421AN020EC00TR Datasheet - Page 140

• Manufacturer Part Number: Z8F6421AN020EC00TR
• Description: IC ENCORE MCU FLASH 64K 44LQFP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F6421AN020EC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 44-LQFP
• For Use With: 269-4678 - KIT DEV FOR Z8F642 MCU 44 PIN269-4677 - KIT DEV FOR Z8F642 MCU 28PIN269-4540 - KIT DEV FOR Z8 ENCORE 16K TO 64K
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Z8F6421AN020EC00T

Operation
PS019921-0308
Figure 22. SPI Configured as a Master in a Single Master, Multiple Slave System
To Slave #2’s SS Pin
To Slave #1’s SS Pin
The SPI is a full-duplex, synchronous, character-oriented channel that supports a four-wire
interface (serial clock, transmit, receive and Slave select). The SPI block consists of a
transmit/receive shift register, a Baud Rate (clock) Generator and a control unit.
From Master
From Master
From Master
To Master
From Slave
To Slave
To Slave
Figure 23. SPI Configured as a Slave
VCC
SS
MISO
MOSI
SCK
MISO
MOSI
SCK
SS
GPIO
GPIO
Bit 7
8-bit Shift Register
Bit 0
SPI Slave
8-bit Shift Register
SPI Master
Bit 0
Bit 7
Baud Rate
Generator
Z8 Encore! XP
Product Specification
Serial Peripheral Interface
®
F64XX Series
126