UPSD3234A-40U6T STMicroelectronics, UPSD3234A-40U6T Datasheet - Page 82

• Manufacturer Part Number: UPSD3234A-40U6T
• Description: IC MCU 8032 64KB FLASH 80TQFP
• Manufacturer: STMicroelectronics
• Series: µPSDr

Specifications of UPSD3234A-40U6T

• Core Processor: 8032
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, UART/USART, USB
• Peripherals: LVR, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 288KB (288K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Pulse width modulation (PWM)
Table 49.
14.2
82/189
addr
SFR
B2
B3
B4
Reg name
PSCL0H
PSCL1H
PSCL1L
PWM SFR memory map (continued)
PWMCON register bit definition:
●
●
●
●
●
Programmable period 8-bit PWM
The PWM 4 channel can be programmed to provide a PWM output with variable pulse width
and period. The PWM 4 has a 16-bit Prescaler, an 8-bit Counter, a Pulse Width Register,
and a Period Register. The Pulse Width Register defines the PWM pulse width time, while
the Period Register defines the period of the PWM. The input clock to the Prescaler is
f
Figure 36. Programmable 4-channel PWM block diagram
OSC
/2. The PWM 4 channel is assigned to Port 4.7.
PWML = PWM 0-3 polarity control
PWMP = PWM 4 polarity control
PWME = PWM enable (0 = disabled, 1= enabled)
CFG3..CFG0 = PWM 0-3 Output (0 = Open Drain; 1 = Push-Pull)
CFG4 = PWM 4 Output (0 = Open Drain; 1 = Push-Pull)
f OSC / 2
7
Bit 5 (PWME)
PWMCON
CPU RD/WR
6
Load
16-bit Prescaler
16-bit Prescaler
8
(B4h, B3h)
Register
Counter
5
16
8
CPU RD/WR
DATA BUS
Bit register name
UPSD3234A, UPSD3234BV, UPSD3233B, UPSD3233BV
4
8-bit PWM4P
Comparator
Comparator
8-bit PWM4
8-bit PWM4
Register
Register
(Period)
3
8
8
8
8
Clock
8-bit Counter
2
Control
PWM4
Match
Reset
1
8-bit PWM4W
8-bit PWM4
Comparator
8-bit PWM4
Comparator
Register
Register
(Width)
8
8
8
8
0
Load
Reset
Bit 6 (PWMP)
value
PWMCON
00
00
00
Comments
Port 4.7
Prescaler 0
Prescaler 1
Prescaler 1
High (8-bit)
High (8-bit)
AI07091
Low (8-bit)