UPSD3433EB40U6 STMicroelectronics, UPSD3433EB40U6 Datasheet - Page 87

• 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
20
20.1
20.2
Standard 8032 timer/counters
There are three 8032-style 16-bit Timer/Counter registers (Timer 0, Timer 1, Timer 2) that
can be configured to operate as timers or event counters.
There are two additional 16-bit Timer/Counters in the Programmable Counter Array (PCA),
see
Standard timer SFRs
Timer 0 and Timer 1 have very similar functions, and they share two SFRs for control:
●
●
Timer 0 has two SFRs that form the 16-bit counter, or that can hold reload values, or that
can scale the clock depending on the timer/counter mode:
●
●
Timer 1 has two similar SFRs:
●
●
Timer 2 has one control SFR:
●
Timer 2 has two SFRs that form the 16-bit counter, and perform other functions:
●
●
Timer 2 has two SFRs for capture and reload:
●
●
Clock sources
When enabled in the “Timer” function, the Registers THx and TLx are incremented every
1/12 of the oscillator frequency (f
dividers in the CCON0, stalls from PFQ/BC, or bus transfer cycles. Timers are always
clocked at 1/12 of f
When enabled in the “Counter” function, the Registers THx and TLx are incremented in
response to a 1-to-0 transition sampled at their corresponding external input pin: pin C0 for
Timer 0; pin C1 for Timer 1; or pin T2 for Timer 2. In this function, the external clock input pin
is sampled by the counter at a rate of 1/12 of f
sample, and a logic '0' in the next sample period, the count is incremented at the very next
sample period (period1: sample=1, period2: sample=0, period3: increment count while
continuing to sample). This means the maximum count rate is 1/24 of the f
restrictions on the duty cycle of the external input signal, but to ensure that a given level is
sampled at least once before it changes, it should be active for at least one full sample
Section 27.1: PCA block on page 175
TCON
TMOD
TH0 is the high byte, address 8Ch
TL0 is the low byte, address 8Ah
TH1 is the high byte, address 8Dh
TL1 is the low byte, address 8Bh
T2CON
TH2 is the high byte, address CDh
TL2 is the low byte, address CCh
RCAP2H is the high byte, address CBh
RCAP2L is the low byte, address CAh
(Table 41 on page
(Table 42 on page
(Table 43 on page
OSC
.
88)
90).
93)
OSC
). This timer clock source is not effected by MCU clock
for details.
OSC
. When a logic '1' is determined in one
Standard 8032 timer/counters
OSC
. There are no
87/293