EZ80F91NA050SC Zilog, EZ80F91NA050SC Datasheet - Page 82

• Manufacturer Part Number: EZ80F91NA050SC
• Description: IC ACCLAIM MCU 256KB 144-BGA
• Manufacturer: Zilog
• Series: eZ80® Acclaim!®r

Specifications of EZ80F91NA050SC

• 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: 0°C ~ 70°C
• Package / Case: 144-LBGA
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 50 MHz
• Data Ram Size: 16 KB
• Number Of Programmable I/os: 32
• Number Of Timers: 16 Bit
• Operating Supply Voltage: 3 V to 3.6 V
• Mounting Style: SMD/SMT
• Height: 1.5 mm
• Length: 13 mm
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Width: 13 mm
• 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No RoHS Version Available
• Other names: 269-3251

eZ80F91 MCU
Product Specification
73
T1
T2
T
T3
CLK
System Clock
ADDR[23:0]
DATA[7:0]
CSx
RD
WAIT
WR
MREQ
or IORQ
®
Figure 11. Example: Z80
Bus Mode Write Timing
Intel Bus Mode
Chip selects configured for Intel bus mode modify the CPU bus signals to duplicate a 
four-state memory transfer similar to that found on Intel-style microcontrollers. The bus
signals and eZ80F91 pins are mapped as displayed in
Figure 12
on page 74. In Intel bus
mode, you select either multiplexed or nonmultiplexed address and data buses. In
nonmultiplexed operation, the address and data buses are separate. In multiplexed
operation, the lower byte of the address, ADDR[7:0], also appears on the data bus,
DATA[7:0], during State T1 of the Intel bus mode cycle.
PS019215-0910
Chip Selects and Wait States