EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 75

• 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 18. Example: Register Values for Figure 7 Memory Chip Select
Chip
Select
CS0
CS1
CS2
CS3
PS027001-0707
CSx_CTL[3]
CSx_EN
CS0_LBR = CS1_LBR = 00h
1
1
1
1
CSx_CTL[4]
CS2_UBR = CFh
CS3_UBR = FFh
CS1_UBR = 9Fh
CS0_UBR = 7Fh
CS3_LBR = D0h
CSx_IO
CS2_LBR = A0h
0
0
0
0
Figure 7. Example: Memory Chip Select
CSx_LBR
A0h
D0h
00h
00h
3 MB Address Space
3 MB Address Space
2 MB Address Space
8 MB Address Space
CS3 Active
CS2 Active
CS1 Active
CS0 Active
CSx_UBR Description
CFh
7Fh
9Fh
FFh
CS0 is enabled as a Memory chip
select. Valid addresses range from
000000h–7FFFFFh.
CS1 is enabled as a Memory chip
select. Valid addresses range from
800000h–9FFFFFh.
CS2 is enabled as a Memory chip
select. Valid addresses range from
A00000h–CFFFFFh.
CS3 is enabled as a Memory chip
select. Valid addresses range from
D00000h–FFFFFFh.
Memory
Location
FFFFFFh
D00000h
CFFFFFh
A00000h
9FFFFFh
800000h
7FFFFFh
000000h
Chip Selects and Wait States
Product Specification
eZ80F91 ASSP
67