EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 71

• 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

PS027001-0707
example,
06Ch
the top ten maskable interrupts.
Table 16. Example: Maskable Interrupt Priority
Table 17. Example: Priority Levels for Maskable Interrupts
Priority
Register
INT_P0
INT_P1
INT_P2
INT_P3
INT_P4
INT_P5
Priority
0
1
2
3
4
5
6
7
8
9
(RTC) as elevated to priority Level 1.
Table 16
044h
06Ch
084h
040h
048h
04Ch
050h
054h
058h
05Ch
Vector
Setting
02h
08h
02h
00h
00h
00h
shows the maskable interrupts
Description
Increase 044h (EMAC Tx) to Priority Level 1
Increase 06Ch (RTC) to Priority Level 1
Increase 084h (Port A1) to Priority Level 1
Default priority
Default priority
Default priority
Source
EMAC Tx
RTC
Port A 1
EMAC Rx
EMAC SYS
PLL
Flash
Timer 0
Timer 1
Timer 2
Table 17
044h
shows the new interrupt priority for
(EMAC Tx),
Product Specification
084h
eZ80F91 ASSP
Interrupt Controller
(Port A 1), and
63