参数资料
型号: AT89EB5114-TGSIL
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: Low-pin-count 8-bit microcontroller with A/D converter
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDSO20
封装: SO-20
文件页数: 44/95页
文件大小: 1126K
代理商: AT89EB5114-TGSIL
44
4311A–8051–01/05
content of the W0R0 registers (see Figure 16). This method allows to change frequency
and duty cycle without glitch.
Note:
If the PWMU0 is off (W0R bit in W0CON not set), W0RnH and W0RnL contents are auto-
matically copied on the shadow registers SW0RnH and SW0RnLn and the contents of
W0FH and W0FL are automatically copied on the shadow registers SW0FH and SW0FL.
This allows to charge the correct comparison values for each PWM module as soon as
the PWMU0 timer/counter is turned on.
Figure 17.
PWMU0 Interrupt System
The W0INVn bits that allow output inversion are on the W0MOD (W0 Counter Mode)
register (See Table 26.).
Table 31.
W0RnH: PWMU0 module n High Toggle Register
W0R0H - PWMU0 Module 0 High Toggle Register (D9h)
W0R1H - PWMU0 Module 1 High Toggle Register (DBh)
W0R2H - PWMU0 Module 2 High Toggle Register (DDh)
Reset Value = 0000 0000b
Not bit addressable
7
6
5
4
3
2
1
0
W0RnH15
W0RnH14
W0RnH13
W0RnH12
W0RnH11
W0RnH10
W0RnH9
W0RnH8
Bit
Number
Bit
Mnemonic Description
7-0
W0RnH
15-8
PWMU0 Module n high toggle register
When the counter exceeds this value, module n output toggles.
W0CH
W0CL
SW0RnH
SW0RnL
W0RnH
W0RnL
16 bits-comparator
<
overtaking
Module n output
W0INVn
W0UP
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