EZ80F91AZ050EG Zilog, EZ80F91AZ050EG Datasheet - Page 113

• 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

PS019215-0910
Flash Address Upper Byte Register
The FLASH_ADDR_U register defines the upper 6 bits of the Flash memory address
space. Changing the value of FLASH_ADDR_U allows on-chip 256 KB Flash memory
to be mapped to any location within the 16 MB linear address space of the eZ80F91
device. If on-chip Flash memory is enabled, the Flash address assumes priority over any
external Chip Selects. The external Chip Select signals are not asserted if the corre-
sponding Flash address is enabled. Internal Flash memory does not hold priority over
internal SRAM. See
Table 37. Flash Address Upper Byte Register
Bit
Reset
CPU Access
Note: R/W = Read/Write; R = Read Only.
Bit Position
[7:2]
FLASH_ADDR_U
[1:0]
Value
00h–FCh These bits define the upper byte of the Flash address.
00
Table
R/W
37.
7
0
Description
When on-chip Flash is enabled, the Flash address space
begins at address {FLASH_ADDR_U, 00b, 0000h}. On-chip
Flash has priority over all external Chip Selects.
Reserved (enforces alignment on a 256 KB boundary).
R/W
6
0
R/W
5
0
R/W
4
0
(FLASH_ADDR_U = 00F7h)
R/W
3
0
Product Specification
R/W
2
0
eZ80F91 MCU
R
1
0
Flash Memory
R
0
0
104