EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 277

• 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

Phase-Locked Loop
PS027001-0707
Overview
(1MHz < F
The Phase-Locked-Loop (PLL) is a programmable frequency multiplier that satisfies the
equation SCLK (Hz) = N * F
PLL includes seven main blocks as listed below:
•
•
•
•
•
•
•
x2
x1
Phase Frequency Detector
Charge Pump
Voltage Controlled Oscillator
Loop Filter
Divider
MUX/CLK Sync
Lock Detect
Oscillator
PLL_INT
OSC
Figure 57. Phase-Locked Loop Block Diagram
< 10MHz)
PLL_CTL0[3:2]
Detect
Lock
PFD
{PLL_DIV_H, PLL_DIV_L}
(F
OSC
OSC
RTC_CLK
PLL_CTL0[7:6]
System Clock
(Hz).
< SCLK < F
SCLK-MUX
Charge
Pump
Div N
Figure 57
OSC
* N)
illustrates the PLL block diagram.
VCO
PLL_CTL1[0] = PLL Enable
Product Specification
C
Loop Filter
PLL1
Off-Chip
Phase-Locked Loop
eZ80F91 ASSP
R
C
PLL
PLL2
269