AT83EB5114 Atmel Corporation, AT83EB5114 Datasheet - Page 50

• Manufacturer Part Number: AT83EB5114
• Manufacturer: Atmel Corporation

Specifications of AT83EB5114

• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 11
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 50
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Operating Voltage (vcc): 3.0 to 3.6
• Timers: 4
• Mask Rom (kbytes): 4
• Watchdog: Yes

PWMU1 Output
Generation
50
AT89/83EB5114
Table 36. W1FL: PWMU1 frequency low control register
W1FL - PWMU1 Frequency Control Register (FBh)
Reset Value = 1111 1111b
Not bit addressable
Table 37. W1CH: PWMU1 counter high control register
W1CH - PWMU1 Counter Control Register (FCh)
Reset Value = 0000 0000b
Not bit addressable
Table 38. W1CL: PWMU1 counter low control register
W1CL - PWMU1 Counter Control Register (FDh)
Reset Value = 0000 0000b
Not bit addressable
All the PWMU1 modules have the same frequency determined by the W1F registers.
However, each module has is own duty cycle determined by the W1Rn Registers. (n is
the module number).
When the W1C content is lower than the value programmed via W1Rn registers, the
output is the W1INVn-bit (low if 0, high if 1). When it is equal or higher, the output is the
opposite of this W1INVn-bit (high if 0, low if 1).
When the W1C content is higher than SW1F’s, an overtaking occurs. The counter value
(W1C registers) is automatically reloaded with zero (see Figure 21.). If the W1UP bit is
high, the new comparison value is reloaded on the shadow SW1R0 registers with the
Number
Number
Number
W1C15
W1C7
W1F7
Bit
Bit
Bit
7-0
7-0
7-0
7
7
7
Mnemonic
Mnemonic
Mnemonic
W1C15-8
W1C14
W1F7-0
W1F7-0
W1C6
W1F6
Bit
Bit
Bit
6
6
6
W1C13
Description
PWMU1 low bits counter control frequency
The PWMU1 counter is counting from zero up to W1F15-0 value.
Description
PWMU1 high bits counter frequency
Description
PWMU1 low bits counter frequency
W1C5
W1F5
5
5
5
W1C12
W1C4
W1F4
4
4
4
W1C11
W1F3
W1C3
3
3
3
W1C10
W1F2
W1C2
2
2
2
W1F1
W1C9
W1C1
1
1
1
4311C–8051–02/08
W1C8
W1C0
W1F0
0
0
0