參數(shù)資料
型號(hào): AT89EB5114-TGSIL
廠商: Atmel
文件頁數(shù): 38/86頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 4K 20SOIC
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 38
系列: 89EB
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 11
程序存儲(chǔ)器容量: 4KB(4K x 8)
程序存儲(chǔ)器類型: 閃存
EEPROM 大小: 256 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 6x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 616 (CN2011-ZH PDF)
43
AT89/83EB5114
4311C–8051–02/08
Table 28. W0FL: PWMU0 frequency low control register
W0FL - PWMU0 Frequency Control Register (EBh)
Reset Value = 1111 1111b
Not bit addressable
Table 29. W0CH: PWMU0 counter high control register
W0CH - PWMU0 Counter Control Register (ECh)
Reset Value = 0000 0000b
Not bit addressable
Table 30. W0CL: PWMU0 counter low control register
W0CL - PWMU0 Counter Control Register (EDh)
Reset Value = 0000 0000b
Not bit addressable
PWMU0 Output
Generation
All the PWMU0 modules have the same frequency determined by the W0F register. But
each module has its own duty cycle determined by the W0Rn Register. (n is the module
number).
When the W0C content is lower than the value programmed via the W0Rn registers, the
output is the W0INVn-bit (low if 0, high if 1). When it is equal or higher, the output is the
opposite of this W0INVn-bit (high if 0, low if 1).
When the W0C content is higher than SW0F’s, an overtaking occurs. The counter value
(W0C registers) is automatically reloaded with zero (see Figure 16). If the W0UP bit is
high, the new comparison value is reloaded on the shadow SW0R0 registers with the
7
6
5
4
3
2
1
0
W0F7
W0F6
W0F5
W0F4
W0F3
W0F2
W0F1
W0F0
Bit
Number
Bit
Mnemonic Description
7-0
W0F7-0
PWMU0 low bits counter control frequency
The PWMU0 counter is counting from zero up to WOF15-0 value.
7
6
5
4
3
2
1
0
W0C15
W0C14
W0C13
W0C12
W0C11
W0C10
W0C9
W0C8
Bit
Number
Bit
Mnemonic Description
7-0
W0C15-8 PWMU0 high bits counter frequency.
7
6
5
4
3
2
1
0
W0C7
W0C6
W0C5
W0C4
W0C3
W0C2
W0C1
W0C0
Bit
Number
Bit
Mnemonic Description
7-0
W0C7-0
PWMU0 low bits counter frequency.
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