UPSD3234A-40U6T STMicroelectronics, UPSD3234A-40U6T Datasheet - Page 61

• 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: -

UPSD3234A, UPSD3234BV, UPSD3233B, UPSD3233BV Timer/counters (Timer 0, Timer 1 and Tim-
11.1.3
Table 39.
Mode 2
Mode 2 configures the Timer register as an 8-bit Counter (TL1) with automatic reload, as
shown in
contents of TH1, which is preset by software. The reload leaves TH1 unchanged. Mode 2
operation is the same for Timer/Counter 0.
Figure 22. Timer/counter mode 2: 8-bit Auto-reload
Bit
7
6
5
4
3
2
1
0
Symbol
Gate
Gate
Figure
INT1 pin
C/T
C/T
M1
M0
M1
M0
Gate
Description of the TMOD bits
T1 pin
f
OSC
22. Overflow from TL1 not only sets TF1, but also reloads TL1 with the
Timer1
Timer0
Timer
TR1
÷ 12
Gating control when set. Timer/Counter 1 is enabled only while INT1 pin
is High and TR1 control pin is set. When cleared, Timer 1 is enabled
whenever TR1 control bit is set
Timer or Counter selector, cleared for timer operation (input from internal
system clock); set for counter operation (input from T1 input pin)
(M1,M0)=(0,0): 13-bit Timer/Counter, TH1, with TL1 as 5-bit prescaler
(M1,M0)=(0,1): 16-bit Timer/Counter. TH1 and TL1 are cascaded. There
is no prescaler.
(M1,M0)=(1,0): 8-bit auto-reload Timer/Counter. TH1 holds a value which
is to be reloaded into TL1 each time it overflows
(M1,M0)=(1,1): Timer/Counter 1 stopped
Gating control when set. Timer/Counter 0 is enabled only while INT0 pin
is High and TR0 control pin is set. When cleared, Timer 0 is enabled
whenever TR0 control bit is set
Timer or Counter selector, cleared for timer operation (input from internal
system clock); set for counter operation (input from T0 input pin)
(M1,M0)=(0,0): 13-bit Timer/Counter, TH0, with TL0 as 5-bit prescaler
(M1,M0)=(0,1): 16-bit Timer/Counter. TH0 and TL0 are cascaded. There
is no prescaler.
(M1,M0)=(1,0): 8-bit auto-reload Timer/Counter. TH0 holds a value which
is to be reloaded into TL0 each time it overflows
(M1,M0)=(1,1): TL0 is an 8-bit Timer/Counter controlled by the standard
TImer 0 control bits. TH0 is an 8-bit timer only controlled by Timer 1
control bits
C/T = 0
C/T = 1
Control
(8 bits)
(8 bits)
TH1
TL1
Function
TF1
Interrupt
AI06623
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