UPSD3354DV-40U6 Datasheet, PDF (160/272 Pages) STMicroelectronics – fast 8032 MCU with programmable logic

Programmable counter array (PCA) with PWM
UPSD33xx
Table 104. PCACON0 register bit definition (continued)
Bit
Symbol
Function
5
EOVFI
1 = Enable Counter Overflow Interrupt if overflow
flag (OVF) is set
0 = PCA operates when CPU is in Idle mode
4
PCAIDLE
1 = PCA stops running when CPU is in Idle mode
3
–
Reserved
0 = Select 16-bit PWM
2
10B_PWM
1 = Select 10-bit PWM
00 Select Prescaler clock as Counter clock
1-0
CLK_SEL
01 Select Timer 0 Overflow
[1:0]
10 Select External Clock pin (P4.3 for PCA0)
(MAX clock rate = f_OSC/4)
Table 105. PCA1 Control register PCACON1 (SFR 0BCh, Reset Value 00h)
t(s) ^{Bit 7}
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
c ^–
EN_PCA EOVFI PCAIDLE
–
10B_PWM
CLK_SEL[1:0]
rodu ^{Table 106. PCACON1 register bit definition}
P _Bit
Symbol
Function
te _{0 = PCA counter is disabled}
ole ⁶
EN_PCA ^{1 = PCA counter is enabled}
EN_PCA Counter Run Control Bit. Set with software to turn the PCA
bs ^{counter on. Must be cleared with software to turn the PCA counter off.}
O ₅
EOVFI 1 = Enable Counter Overflow Interrupt if overflow flag (OVF) is set
) ^{- 0 = PCA operates when CPU is in Idle mode}
4
PCAIDLE
t(s ^{1 = PCA stops running when CPU is in Idle mode}
c 3
–
Reserved
du ^{0 = Select 16-bit PWM}
2
10B_PWM
ro ^{1 = Select 10-bit PWM}
P 00 Select Prescaler clock as Counter clock
CLK_SEL
te^1-0
01 Select Timer 0 Overflow
[1:0]
Obsole ^{10 Select External Clock pin (P4.7 for PCA1) (MAX clock rate = fOSC/4)}
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Doc ID 9685 Rev 7