EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 105

• 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

Flash Memory
PS027001-0707
32 KB blocks
7
6
5
4
3
2
1
0
8
The eZ80F91 device features 256 KB (262,144 bytes) of non-volatile Flash memory with
Read/Write/Erase capability. The main Flash memory array is arranged in 128 pages with
8 rows per page and 256 bytes per row. In addition to main Flash memory, there are two
separately addressable rows which comprise a 512-byte information page.
In eight 32 KB blocks, 256 KB of main storage is protected. Protecting a 32 KB block
prevents Write or Erase operations. The lower 32 KB block (
tected using the external WP pin. This portion of memory is called the Boot block because
the CPU always starts executing code from this location at startup. If the application
requires external program memory, then the Boot block must at least contain a jump
instruction to move the Program Counter outside of the Flash memory space.
The Flash memory arrangement is illustrated in
Figure 23. eZ80F91 Flash Memory Arrangement
2 KB pages
per block
16
E
D
C
B
A
F
9
8
7
6
5
4
3
2
1
0
256-byte rows
per page
8
7
6
5
4
3
2
1
0
Figure
255 254
23.
single-byte columns
00000h
per row
Product Specification
256
–
07FFFh
eZ80F91 ASSP
1
Flash Memory
) is pro-
0
97