Z32AN00NW200SG Zilog, Z32AN00NW200SG Datasheet - Page 128

• Manufacturer Part Number: Z32AN00NW200SG
• Description: IC ARM922T MCU 200MHZ 256-BGA
• Manufacturer: Zilog
• Series: Encore!® 32r

Specifications of Z32AN00NW200SG

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, IrDA, SmartCard, SPI, UART/USART, USB OTG
• Peripherals: DMA, LCD, Magnetic Card Reader, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• For Use With: 269-4713 - KIT DEV ENCORE 32 SERIES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: 269-4717

Z32AN Series Data Sheet
16.2 16-bit PWM Timers (Timers 3 to 0)
16.2.1 Operation
16.2.1.1
16.2.1.2
DS0200-003
There are four 16-bit reloadable timers on APB that can be used for timing, event counting, or generation of
pulse-width modulated (PWM) signals. The timers’ features include:
The timers are 16-bit up-counter timers. Minimum time-out delay is set by loading the value 0001h into TxR
and setting the TxCTL.PRES to “1”. Maximum time-out delay is set by loading the value 0000h into TxR,
and setting TxCTL.PRES to “4096”. If the Timer reaches FFFFh, the timer rolls over to 0000h and continues
counting. Operating Modes (TxCTL.TMODE)
In this mode, the timer counts from Tx to TxR. The timer input is hclk. Upon reaching TxR, the timer
generates an interrupt, and the count value in Tx is reset to 0001h. The timer is disabled and stops counting.
The steps for configuring a timer for this mode are:
The timer period is given by the following equation:
In this mode, the timer counts from Tx to TxR. The timer input is hclk. Upon reaching TxR, the timer
generates an interrupt, the Tx is reset to 0001h and counting resumes. The steps for configuring a timer for
this mode are:
The timer period is given by the following equation:
One-Shot Mode
Continuous Mode
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1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
16-bit reload counter
Programmable pre-scalar with pre-scale values from 1 to 4096
PWM output generation
Capture, compare and capture/compare capability
External input pin for timer input, clock gating, or capture signal. External input pin signal
frequency is limited to a maximum of 1/4th the hclk frequency.
Timer output pin
Timer interrupt
Clear TxCTL.TEN, Write TxCTL.TMODE to “000”, and set TxCTL.PRES. If using the timer
output function, set the initial output level via TPOL:
Write to the Timer register to set the starting count value.
Write to the Timer Compare register to set the Compare value.
If desired, enable the timer interrupt in the Interrupt Controller and set the timer interrupt
priority by writing to the appropriate Configuration Table Register in the Interrupt Controller.
If using the Timer Output function, configure the associated GPIO port pin for the Timer Output
function. See chapter covering GPIO.
Write to the Timer Control register to enable the timer and initiate counting (TEN = “1”).
Clear TxCTL.TEN, Write TxCTL.TMODE to “001”, and set TxCTL.PRES. If using the timer
output function, set the initial output level via TPOL.
Write to the Timer register to set the starting count value. This only affects the first pass in
Continuous mode. After the first Timer Compare in Continuous mode, counting always begins
at the reset value of 0001H.
Write to the Timer Compare register to set the Compare value.
If desired, enable the timer interrupt in the Interrupt Controller and set the timer interrupt
priority by writing to the appropriate Configuration Table Register in the Interrupt Controller.
If using the Timer Output function, configure the associated GPIO port pin for the Timer Output
function. See chapter covering GPIO.
Write to the Timer Control register to enable the timer and initiate counting (TEN = “1”).
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