Z16FMC28AG20SG Zilog, Z16FMC28AG20SG Datasheet - Page 310
![Microcontrollers (MCU) 16BIT 128K FL 4KRAM 2UART 12CH 10BIT A/D](/photos/39/69/396954/tqfp-64_sml.jpg)
Z16FMC28AG20SG
Manufacturer Part Number
Z16FMC28AG20SG
Description
Microcontrollers (MCU) 16BIT 128K FL 4KRAM 2UART 12CH 10BIT A/D
Manufacturer
Zilog
Series
Z16FMCr
Datasheet
1.Z16FMC28AG20_EG.pdf
(341 pages)
Specifications of Z16FMC28AG20SG
Processor Series
Z16FMC
Core
ZNEO
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
4 KB
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
46
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Package / Case
LQFP-64
Development Tools By Supplier
Z16FMC28200KITG
Minimum Operating Temperature
0 C
Core Processor
ZNEO
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
46
Eeprom Size
-
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z16FMC28AG20SG
Manufacturer:
Zilog
Quantity:
176
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Table 165. Oscillator Configuration and Selection
PS028702-1210
Clock Source
Internal Precision
Oscillator
External Crystal/Reso-
nator/
External Clock Drive
Internal Watchdog
Timer Oscillator
Clock Selection Following System Reset
Unintentional access to the Oscillator Control Register (OSCCTL) stops the chip by
switching to a non-functioning oscillator. Accidental alteration of the OSCCTL register is
prevented by a locking/unlocking scheme. To write the register, unlock it by making two
writes to the OSCCTL register with the values
OSCCTL register then changes the value of the register and returns the register to a locked
state. Any other sequence of oscillator control register writes has no effect. The values
written to unlock the register must be ordered correctly, but need not be consecutive. It is
possible to access other registers within the locking/unlocking operation.
The internal precision oscillator is selected following a System Reset. Startup code after
the System Reset changes the system clock source by unlocking and configuring the OSC-
CTL register. If the
Flash Low Power mode is enabled during reset. When Flash Low Power mode is enabled
during reset, the
be set and the
Characteristics
• 5.5 MHz
• High precision possible when trimmed
• No external components required
• 0 to 20 MHz
• Very high accuracy (dependent on
crystal/resonator or external source)
• Requires external components
• 10 kHz nominal
• Low accuracy
• No external components required
• Low power consumption
DIV
FLPEN
field of the OSCDIV register will be set to
LPOPT
bit in the <CrossRef>Oscillator Control Register (OSCCTL) will
P R E L I M I N A R Y
bit in the the
Program Memory Address 0003H
E7H
Z16FMC Series Motor Control MCUs
Required Setup
• The reset default.
• Configure Option Bits for correct exter-
nal oscillator mode
• Unlock and write Oscillator Control
Register (OSCCTL) to enable external
oscillator
• Wait for required stabilization time
• Unlock and write Oscillator Control
Register (OSCCTL) to select external
oscillator
• Unlock and write Oscillator Control
Register (OSCCTL) to enable and
select Internal WDT oscillator
followed by
08H
Product Specification
18H
.
. A third write to the
Oscillator Control
section is zero,
288
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