Z16FMC32AG20EG Zilog, Z16FMC32AG20EG Datasheet - Page 287

• Manufacturer Part Number: Z16FMC32AG20EG
• Description: Microcontrollers (MCU) 16BIT 32K FL 2K RAM 2UART 12CH 10BIT A/D
• Manufacturer: Zilog
• Series: Z16FMCr

Specifications of Z16FMC32AG20EG

• 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: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-64
• Development Tools By Supplier: Z16FMC28200KITG
• Minimum Operating Temperature: - 40 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: -40°C ~ 105°C
• Lead Free Status / Rohs Status: Details

PS028702-1210
Instruction Trace
Trace Overview
The Z16FMC device has the ability to trace the instruction flow. If enabled, it uses exist-
ing Memory to store the Program Counter data each time a change in execution flow
occurs. This requires you to allocate memory space to hold the trace information.
Trace Events
A trace event occurs anytime a CALL, RET, Interrupt, IRET, TRAP, JP, DJNZ, or Excep-
tion occurs. Trace takes four cycles each time a trace event occurs (five cycles for IRQ,
TRAP and Exceptions).
Trace Buffer
The Trace Buffer is controlled by two registers: Trace Control (TRACECTL) and Trace
Address (TRACEADDR) register. The TRACECTL register is used to enable the trace
and select the size of the Trace Buffer. TRACEADDR selects the starting address for the
trace. The trace address is modulo-n based upon the size of the TRACESEL field in the
TRACECTL register. The modulo-n is zero aligned, which means that the trace buffer
always wraps to zero for the selected size. For example, if the TRACEADDR is set to
FFFFB050H
FFFFB0FFH
reaches
Trace buffer sizes are 128, 256, 512, 1024, 2048, 4096, 8192 and 16384 bytes. Each trace
event requires eight bytes giving a minimum of 16 events to a maximum of 2048 events.
Only the Program Counter values are stored. Other information has to be inferred from the
source code by the trace debugger.
Trace Operation
On each trace event the current program counter is placed in memory pointed to by the
TRACEADDR. TRACEADDR increments by 4 and the next state of the program counter
is written to the TRACEADDR. TRACEADDR increments by 4 again. TRACEADDR
always points to the next data to be written. The lower two bits of the TRACEADDR are
always zero.
Extracting Trace Information
The trace information is extracted by reading the data from the selected trace memory
area. The data is then interpreted by the Trace Debugger software.
FFFFB0FFH
and the TRACECTL is set to 81H, the Buffer is located from
with the first trace event to be written to
it will roll over to
P R E L I M I N A R Y
FFFFB000H
Z16FMC Series Motor Control MCUs
.
FFFFB050H
Product Specification
. When the address
On-Chip Debugger
FFFFB000H
to
265