EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 345

• Manufacturer Part Number: EZ80F91AZA50EG
• Description: IC ACCLAIM MCU 256KB 144LQFP
• Manufacturer: Zilog
• Series: eZ80® AcclaimPlus!™r

Specifications of EZ80F91AZA50EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: Ethernet, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LQFP
• Processor Series: EZ80F91x
• Core: eZ80
• Data Bus Width: 8 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, IrDA, SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: eZ80F910300ZCOG
• Minimum Operating Temperature: - 40 C
• For Use With: 269-4712 - KIT DEV ENCORE 32 SERIES269-4671 - BOARD ZDOTS SBC Z80ACCLAIM PLUS269-4561 - KIT DEV FOR EZ80F91 W/C-COMPILER269-4560 - KIT DEV FOR EZ80F91 W/C-COMPILER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 269-4563

Table 228. EMAC FIFO Flags Register
PS027001-0707
Bit
Reset
CPU Access
Note: R = Read Only.
Bit
Position
7
TFF
6
5
TFAE
4
TFE
3
RFF
2
RFAF
1
RFAE
0
RFE
EMAC FIFO Flags Register
The FIFO Flags value is set in the EMAC hardware to half full, or 16 bytes. See
Value
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
Description
Transmit FIFO full
Transmit FIFO not full
Reserved
Transmit FIFO almost empty
Transmit FIFO not almost empty
Transmit FIFO empty
Transmit FIFO not empty
Receive FIFO full
Receive FIFO not full
Receive FIFO almost full
Receive FIFO not almost full
Receive FIFO almost empty
Receive FIFO not almost empty
Receive FIFO empty
Receive FIFO not empty
R
7
0
R
6
0
R
5
1
(EMAC_FFLAGS = 0059h)
R
4
1
R
3
0
R
2
0
Ethernet Media Access Controller
R
1
1
Product Specification
R
0
1
eZ80F91 ASSP
Table
228.
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