EZ80F91MCU Datasheet, PDF (22/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

MII Interface
Signals (18)
eZ80F91 MCU
Product Specification
3
RTC_VDD
RTC_XIN
RTC_XOUT
SCL
SDA
Real-Time
Clock and
32KHz
Oscillator
I2C
Serial
Interface
Ethernet
MAC
Arbiter
8KB
SRAM
Bus
Controller
BUSACK
BUSREQ
INSTRD
IORQ
MREQ
RD
WR
SCK
SS
MISO
MOSI
WP
CTS0/1
DSR0/1
DCD0/1
DTR0/1
RI0/1
RTS0/1
RxD0/1
TxD0/1
SPI
Serial
Parallel
Interface
UART
Universal
Asynchronous
Receiver/
Transmitter
(2)
256KB
Flash
Memory
8KB
SRAM
eZ80
CPU
NMI
HALT_SLP
JTAG/ZDI
Debug
Interface
JTAG / ZDI Signals (5)
Interrupt
Vector
[8:0]
Interrupt
Controller
Chip Select
&
Wait State
Generator
WAIT
CS0
CS1
CS2
CS3
DATA[7:0]
ADDR[23:0]
IrDA
Encoder/
Decoder
GPIO
8-bit General
Purpose
I/O Port
(4)
Crystal
Oscillator,
PLL, and
System Clock
Generator
Programmable
Reload
Timer/Counter
(4)
WDT
Watchdog
Timer
POR/VBO
Internal
RC
Osc.
RESET
Figure 1. eZ80F91 Block Diagram
PS019209-0504
PRELIMINARY
Architectural Overview