Z16FMC32AG20SG Zilog, Z16FMC32AG20SG Datasheet - Page 310

• Manufacturer Part Number: Z16FMC32AG20SG
• Description: Microcontrollers (MCU) 16BIT 32K FL 2K RAM 2UART 12CH 10BIT A/D
• Manufacturer: Zilog
• Series: Z16FMCr

Specifications of Z16FMC32AG20SG

• Processor Series: Z16FMC
• Core: ZNEO
• Data Bus Width: 16 bit
• Program Memory Type: Flash
• Program Memory Size: 32 KB
• Data Ram Size: 2 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

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