ST & T UPSD3212A, UPSD3212C, UPSD3212CV PULSE WIDTH MODULATION (PWM)

67/163

uPSD3212A, uPSD3212C, uPSD3212CV

PULSE WIDTH MODULATION (PWM)

The PWM block has the following features:

■Four-channel, 8-bit PWM unit with 16-bit

prescaler

■One-channel, 8-bit unit with programmable

frequency and pulse width

■PWM Output with programmable polarity

4-channel PWM Unit (PWM 0-3)

The 8-bit counter of a PWM counts module 256

(i.e., from 0 to 255, inclusive). The value held in

the 8-bit counter is compared to the contents of the

Special Function Register (PWM 0-3) of the corre-

sponding PWM. The polarity of the PWM outputs

is programmable and selected by the PWML Bit in

PWMCON register. Provided the contents of a

PWM 0-3 register is greater than the counter val-

ue, the corresponding PWM output is set HIGH

(with PWML = 0). When the contents of this regis-

ter is less than or equal to the counter value, the

corresponding PWM output is set LOW (with

PWML = 0). The pulse-width-ratio is therefore de-

fined by the contents of the corresponding Special

Function Register (PWM 0-3) of a PWM. By load-

ing the corresponding Special Function Register

(PWM 0-3) with either 00H or FFH, the PWM out-

put can be retained at a constant HIGH or LOW

level respectively (with P WML = 0).

For each PWM unit, there is a 16-bit Prescaler that

are used to divide the main system clock to form

the input clock for the corresponding PWM unit.

This prescaler is used to define the desired repeti-

tion rate for the PWM unit. SFR registers B1h -

B2h are used to hold the 16-bit divisor values.

The repetition frequency of the PWM output is giv-

en by:

fPWM8 = (fOSC / prescaler0) / (2 x 256)

And the input clock frequency to the PWM

counters is = fOSC / 2 / (prescaler data value + 1)

See I/O PORTS (MCU Module), page 40 for more

information on how to configure the Port 4 pin as

PWM output.

Contents

Main uPSD3212A, uPSD3212C uPSD3212CV Flash Programmable System Devices with 8032 MCU with USB and P r ogrammable Logic FEATURES SUMMARY uPSD3212A, uPSD3212C, uPSD3212CV Table 1. Device Summary TABLE OF CONTENTS Page Page Page SUMMARY DESCRIPTION Figure 3. TQFP52 Connections Figure 4. TQFP80 Connections Table 2. 80-Pin Package Pin Description Page uPSD3212A, uPSD3212C, uPSD3212CV 52-PIN PACKAGE I/O PORT ARCHITECTURE OVERVIEW Page Page Page Page Page Table 5. Logical Instructions Page uPSD3212A, uPSD3212C, uPSD3212CV Page Page Page Page Figure 14. State Sequence in uPSD321x Devices uPSD3200 HARDWARE DESCRIPTION MCU MODULE DISCRIPTION Table 16. List of all SFR Page Page uPSD3212A, uPSD3212C, uPSD3212CV Table 17. PSD Module Register Address Offset Page INTERRUPT SYSTEM Figure 16. Interrupt System Page Table 20. Description of the IE Bits. Table 21. Description of the IEA Bits Table 22. Description of the IP Bits Page POWER-SAVING MODE I/O PORTS (MCU MODULE) Page PORT Type and Description Figure 17. PORT Type and Description (Part 1) Figure 18. PORT Type and Description (Part 2) pull-ups + OSCILLATOR SUPERVISORY WATCHDOG TIMER Page TIMER/COUNTERS (TIMER 0, TIMER 1 AND TIM ER 2) Table 39. Description of the TMOD Bits Page Page Table 41. Timer/Counter 2 Operating Modes Table 42. Description of the T2CON Bits Figure 24. Timer 2 in Capture Mode Figure 25. Timer 2 in Auto-Reload Mode Page STANDARD SERIAL INTERFACE (UART) Table 43. Serial Port Control Register (SCON) 76543210 SM0 SM1 SM2 REN TB8 RB8 TI RI Table 44. Description of the SCON Bits Page Page Page Figure 29. Serial Port Mode 1, Block Diagram Figure 30. Serial Port Mode 1, Waveforms Page 63/163 Figure 31. Serial Port Mode 2, Block Diagram Figure 32. Serial Port Mode 2, Waveforms Figure 33. Serial Port Mode 3, Block Diagram Figure 34. Serial Port Mode 3, Waveforms ANALOG-TO-DIGITAL CO N VERTOR (ADC) Table 46. ADC SFR Memory Map Table 47. Description of the ACON Bits Table 48. ADC Clock Input PULSE WIDTH MODULATION (PWM) Figure 36. Four-Channel 8-bit PWM Block Diagram Page Page Page I2C INTERFACE Table 51. Description of the S2CON Bits Table 52. Selection of the Serial Clock Frequency SCL in Master Mode Page Page USB HARDWARE Table 62. USB Interrupt Enable Register (UIEN: 0E9h) Table 63. Description of the UIEN Bits Table 64. USB Interrupt Status Register (UISTA: 0E8h) Table 65. Description of the UISTA Bits Page Page Table 70. USB Control Register (UCON2: 0ECh) Table 71. Description of the UCON2 Bits Table 72. USB Endpoint0 Status Register (USTA: 0EDh) Table 73. Description of the USTA Bits Page Page Table 78. Transceiver DC Characteristics Table 79. Transceiver AC Characteristics Page Page Figure 44. Differential to EOP Transition Skew and EOP Width Figure 45. Differential Data Jitter PSD MODULE concurrently. Figure 46. PSD MODULE Block Diagram AI07431 Page DEVELOPMENT SYSTEM PSD MODULE REGISTER DESCRIPTION AND ADDRESS OFFSET PSD MODULE DETAILED OPERATION or operation MEMORY BLOCKS Page Table 82. Instructions Page Page Page Page cannot Page may Page Page Page PLDS Figure 54. PLD Diagram DECODE PLD Note: 1. Ports A is not available in the 52-pin package PAGE REGISTER CPLD Page Page Page Page AN1171 I/O PORTS (PSD MODUL E) AN1171 Figure 60. Peripheral I/O Mode Table 89. Port Operating Modes Table 91. I/O Port Latched Address Output Assignments Table 90. Port Operating Mode Settings Page Page Page Page Page Page POWER MANAGEMENT Page Page Table 100. Power Management Mode Registers PMMR2 Table 101. APD Counter Operation RESET TIMING AND DEVICE STATUS AT RESET PROGRAMMING IN-CIRCUIT USING THE JTAG SERIAL INTERFACE AN1153 INITIAL DELIVERY STATE AC/DC PARAMETERS Table 104. PSD MODULE Example, Typ. Power Calculation at VCC = 5.0V (Turbo Mode Off) MAXIMUM RATING EMC CHARACTERISTICS Page DC AND AC PARAMETERS Figure 70. Switching Waveforms Key AI03102 Table 113. Major Parameters Table 114. DC Characteristics (5V Devices) Page Table 115. DC Characteristics (3V Devices) Page Figure 71. External Program Memory READ Cycle Table 116. External Program Memory AC Characteristics (with the 5V MCU Module) Table 117. External Program Memory AC Characteristics (with the 3V MCU Module) Figure 72. External Data Memory READ Cycle Table 118. External Clock Drive (with the 5V MCU Module) Table 119. External Clock Drive (with the 3V MCU Module) Figure 73. External Data Memory WRITE Cycle Table 120. External Data Memory AC Characteristics (with the 5V MCU Module) Table 121. External Data Memory AC Characteristics (with the 3V MCU Module) Table 122. A/D Analog Specification Figure 74. Input to Output D isable / Enable Table 123. CPLD Combinatorial Timing (5V Devices) Table 124. CPLD Combinatorial Timing (3V Devices) Figure 75. Synchronous Clock Mode Tim i ng P LD Table 125. CPLD Macrocell Synchronous Clock Mode Timing (5V Devices) Table 126. CPLD Macrocell Synchronous Clock Mode Timing (3V Devices) Figure 76. Asynchronous RESET / Preset Figure 77. Asynchronous Clock Mode Timing (Product Term Clock) Table 127. CPLD Macrocell Asynchronous Clock Mode Timing (5V Devices) Table 128. CPLD Macrocell Asynchronous Clock Mode Timing (3V Devices) Figure 78. Input Macrocell Ti ming (Product Term Clock) Table 129. Input Macrocell Timing (5V Devices) Table 130. Input Macrocell Timing (3V Devices) Table 131. Program, WRITE and Erase Times (5V Devices) Table 132. Program, WRITE and Erase Times (3V Devices) Figure 79. Peripheral I/O READ Timing Table 133. Port A Peripheral Data Mode READ Timing (5V Devices) Table 134. Port A Peripheral Data Mode READ Timing (3V Devices) Figure 80. Peripheral I/O WRIT E Timing Table 135. Port A Peripheral Data Mode WRITE Timing (5V Devices) Table 136. Port A Peripheral Data Mode WRITE Timing (3V Devices) Figure 81. Reset (RESET) Timing Table 137. Reset (RESET) Timing (5V Devices) Table 138. Reset (RESET) Timing (3V Devices) Table 139. VSTBYON Definitions Timing (5V Devices) Table 140. VSTBYON Timing (3V Devices) Figure 82. ISC Timing Table 141. ISC Timing (5V Devices) Table 142. ISC Timing (3V Devices) Figure 83. MCU Module AC Measurement I/O Waveform Figure 84. PSD MODULE AC Float I/O Waveform Figure 85. External Clock Cycle Figure 86. Recommended Oscillator Circui t s Figure 87. PSD MODULE AC Measurement I/O Waveform Figure 88. PSD MODULEAC Measurement Load Circuit Table 143. Capacitance PACKAGE MECHANICAL INFORMATIO N Table 144. TQFP52 52-lead Plastic Thin, Quad, Flat Package Mechanical Data Page Table 145. TQFP80 80-lead Plastic Thin, Quad, Flat Package Mechanical Data PART NUMBERING Table 146. Ordering Information Scheme REVISION HISTORY Table 147. Document Revision History 163/163