EZ80F91AZ050EG Zilog, EZ80F91AZ050EG Datasheet - Page 329

• Manufacturer Part Number: EZ80F91AZ050EG
• Description: IC ACCLAIM MCU 256KB 144LQFP
• Manufacturer: Zilog
• Series: eZ80® Acclaim!®r

Specifications of EZ80F91AZ050EG

• 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, UART
• 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: 269-3867; EZ80F91AZ050EG

Table 209. EMAC Boundary Pointer Register—Upper Byte
Table 210. EMAC Receive High Boundary Pointer Register—Low Byte (EMAC_RHBP_L = 0047h)
PS019215-0910
Bit
Reset
CPU Access
Note: R = Read Only.
Bit 
Position
[7:0]
EMAC_BP_U
Bit
Reset
CPU Access
Note: R = Read Only, R/W = Read/Write
Bit 
Position
[7:0]
EMAC_RHBP_L
EMAC Receive High Boundary Pointer Register—Low and High Bytes
The Receive High Boundary Pointer Register must be set to the end of the Receive buffer
+1 in EMAC shared memory. This RHBP uses the same RAM_ADDR_U as the
EMAC_BP_U pointer above. See
Value
00h–FFh These bits represent the upper byte of the 3 byte EMAC
Value
00h–E0h These bits represent the Low byte of the 2 byte EMAC
R/W
Description
Boundary Pointer value, {EMAC_BP_U, EMAC_BP_H,
EMAC_BP_L}. Bit 7 is bit 23 of the 24 bit value. Bit 0 is bit 16 of
the 24 bit value.
R
7
1
7
0
Description
Receive High Boundary Pointer value, {EMAC_RHBP_H,
EMAC_RHBP_L}. Bit 7 is bit 7 of the 16 bit value. Bit 0 is bit
0 (lsb) of the 16 bit value.
R/W
R
6
1
6
0
R/W
R
5
1
5
0
Table 210
R
R
4
1
4
0
R
R
3
1
3
0
and
Table 211
(EMAC_BP_U = 0046h)
R
R
2
1
2
0
on page 321.
Ethernet Media Access Controller
R
R
1
1
1
0
Product Specification
R
R
0
1
0
0
320