Z8F2480AN020SG Zilog, Z8F2480AN020SG Datasheet - Page 208
Z8F2480AN020SG
Manufacturer Part Number
Z8F2480AN020SG
Description
MCU 8BIT 24KB FLASH 44LQFP
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F2480AN020SG
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
Number Of I /o
37
Program Memory Size
24KB (24K x 8)
Program Memory Type
FLASH
Ram Size
3K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-LQFP
Processor Series
Z8F248x
Core
eZ8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
37
Number Of Timers
3
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
On-chip Adc
10 bit, 8 Channel
For Use With
770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU269-4643 - KIT DEV Z8 ENCORE XP 28-PIN269-4630 - DEV KIT FOR Z8 ENCORE 8K/4K269-4629 - KIT DEV Z8 ENCORE XP 28-PIN269-4628 - KIT DEV Z8 ENCORE XP 8-PIN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
269-4676
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z8F2480AN020SG
Manufacturer:
Zilog
Quantity:
85
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ESPI Register Overview
Operation
PS025011-1010
Slave Select
The Slave Select signal is a bidirectional framing signal with several modes of operation
to support SPI and other synchronous serial interface protocols. The Slave Select mode is
selected by the SSMD field of the ESPI Mode register. The direction of the SS signal is
controlled by the SSIO bit of the ESPI Mode register. The SS signal is an input on slave
devices and is an output on the active Master device. Slave devices ignore transactions on
the bus unless their Slave Select input is asserted. In SPI MASTER mode, additional
GPIO pins are required to provide Slave Selects if there is more than one slave device.
The ESPI Control/Status Registers are summarized in
During a transfer, data is sent and received simultaneously by both the Master and Slave
devices. Separate signals are required for transmit data, receive data, and the serial clock.
When a transfer occurs, a multi-bit (typically 8-bit) character is shifted out one data pin
and a multi-bit character is simultaneously shifted in on second data pin. An 8-bit shift
register in the Master and an 8-bit shift register in the Slave are connected as a circular
buffer. The ESPI shift register is buffered to support back-to-back character transfers in
high performance applications.
A transaction is initiated when the Data register is written in the Master device. The value
from the Data register is transferred into the shift register and the I2C transaction begins.
At the end of each character transfer, if the next transmit value has been written to the data
register, the data and shift register values are swapped, which places the new transmit data
into the shift register and the shift register contents (receive data) into the data register. At
that point the Receive Data Register Not Empty signal is asserted (RDRNE bit set in the
Status Register). Once software reads the receive data from the Data register, the Transmit
Data Register Empty signal is asserted (TDRE bit set in the Status Register) to request the
next transmit byte. To support back-to-back transfers without an intervening pause, the
receive and transmit interrupts must be serviced when the current character is being
transferred.
Table 108. ESPI Registers
Address
XX0
XX2
XX4
XX6
Even Address
Data
Control
Status
Baud Rate High Baud Rate Low
P R E L I M I N A R Y
Odd Address
Transmit Data Command and Receive Date Buffer Control
Mode
State
Table 108.
Z8 Encore! XP
Enhanced Serial Peripheral Interface
Product Specification
®
F1680 Series
194
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