W78E058DFG Nuvoton Technology Corporation of America, W78E058DFG Datasheet - Page 55

• Manufacturer Part Number: W78E058DFG
• Description: IC MCU 8-BIT 32K FLASH 44-PQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E058DFG

• Core Processor: 8052
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 36
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

The auto-reload mode as an up counter is enabled by clearing the CP RL
register. In this mode, Timer/Counter 2 is a 16 bit up counter. When the counter rolls over from FFFFh,
a reload is generated that causes the contents of the RCAP2L and RCAP2H registers to be reloaded
into the TL2 and TH2 registers. The reload action also sets the TF2 bit. If the EXEN2 bit is set, then a
negative transition of T2EX pin will also cause a reload. This action also sets the EXF2 bit in T2CON.
14.3.2 Auto-Reload Mode, Counting up
EXEN2=T2CON.3
TR2=T2CON.2
TR2=T2CON.2
Fosc
T2=P1.0
T2EX=P1.1
Fosc
T2=P1.0
1/12
1/12
Figure 14- 5 16-Bit Auto-reload Mode, Counting Up
Preliminary W78E516D/ W78E058D Data Sheet
Figure 14- 4 16-Bit Capture Mode
(RCLK,TCLK,
(RCLK,TCLK,
0
1
C/T2=T2CON.1
0
1
C/T2=T2CON.1
- 55 -
CP /
CP /
RCAP2L
RCAP2L
RL2
RL2
TL2
TL2
)= (0,0,1)
)= (0,0,0)
TH2
RCAP2H
TH2
RCAP2H
Publication Release Date: July 30, 2008
T2CON.7
T2CON.7
TF2
/
TF2
T2CON.6
EXF2
T2CON.6
EXF2
2 bit in the T2CON
Revision A01
Interrupt
Interrupt
Timer2
Timer2