UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 181

• Manufacturer Part Number: UPSD3433EB40U6
• Description: MCU 8BIT 8032 128KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3433EB40U6

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• For Use With: 497-5518 - EVAL BOARD RFID READER497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-5660

uPSD34xx
27.10
27.11
27.12
PWM mode - fixed frequency, 10-bit
The 10-bit PWM logic requires that all 3 TCMs in PCA0 or PCA1 operate in the same 10-bit
PWM mode. The 10-bit PWM operates in a similar manner as the 16-bit PWM, except the
PCACHm and PCACLm counters are reconfigured as 10-bit counters. The CAPCOMHn and
CAPCOMLn Registers become 10-bit registers.
PWM duty cycle of each TCM module can be specified in the 10-bit CAPCOMHn and
CAPCOMLn Registers. When the 10-bit PCA counter is equal or greater than the values in
the 10-bit registers CAPCOMHn and CAPCOMLn, the PWM output switches to a high state.
When the 10-bit PCA counter overflows, the PWM pin is switched to a logic low and starts
the next PWM pulse.
The most-significant 6 bits in the PCACHm counter and CAPCOMH Register are “Don’t
cares” and have no effect on the PWM generation.
Writing to capture/compare registers
When writing a 16-bit value to the PCA Capture/Compare registers, the low byte should
always be written first. Writing to CAPCOMLn clears the E_COMP Bit to '0'; writing to
CAPCOMHn sets E_COMP to '1' the largest duty cycle is 100% (CAPCOMHn CAPCOMLn
= 0x0000), and the smallest duty cycle is 0.0015% (CAPCOMHn CAPCOMLn = 0xFFFF). A
0% duty cycle may be generated by clearing the E_COMP Bit to ‘0’.
Control register bit definition
Each PCA has its own PCA_CONFIGn, and each module within the PCA block has its own
TCM_Mode Register which defines the operation of that module (see
through
and PCA1 (see
Table 97 on page
Table 98 on page
182). There is one PCA_STATUS Register that covers both PCA0
183).
Programmable counter array (PCA) with PWM
Table 96 on page 182
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