参数资料
型号: PCF8536BT/1,118
厂商: NXP Semiconductors
文件页数: 13/74页
文件大小: 0K
描述: IC LCD DRIVER LOW MPLEX 56TSSOP
特色产品: NXP - I2C Interface
标准包装: 1
显示器类型: LED,LCD
配置: 7段 + DP,14段 + DP + AP,点阵
接口: SPI 3 线串行
数字或字符: 20 字符,40 字符,320 元件
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 56-TFSOP(0.240",6.10mm 宽)
供应商设备封装: 56-TSSOP
包装: 标准包装
其它名称: 568-8446-6
NXP Semiconductors
COE (1)
PCF8536
Universal LCD low multiplex driver with 6 channel PWM generator
EFR (2)
OSCCLK
pin
Internal oscillator
230 kHz
1
0
Programmable
divider
LCD frame frequency
0
1
9.6 kHz (3)
LCD waveform
generator
OSC
selection, q
0
1
(4)
Programmable
divider
PWM frame frequency
selection, p
PWM waveform
generator
013aaa448
(1) Can only be used with the internal oscillator (OSC = 0).
(2) Can only be used with an external oscillator (OSC = 1).
(3) Nominal value for divide factor q is 24; source clock is 230 kHz (see Section 8.1.9 ).
(4) PWM requires an external or internal 230 kHz clock.
Fig 7.
Table 11.
Oscillator selection
Valid combinations of bits OSC, EFR, and COE
OSC
0
COE
0
EFR
not used
OSCCLK pin
inactive;
Clock source
internal oscillator used
may be left floating
0
1
not used
output of internal oscillator
internal oscillator used
frequency (prescaler)
1
1
not used
not used
0
1
9.6 kHz input
230 kHz input
OSCCLK pin
OSCCLK pin
Table 12.
Typical use of bits OSC, EFR, and COE
8.1.5.1
Usage
LCD and/or PWM with internal oscillator
LCD and PWM with external oscillator
LCD with external oscillator
Oscillator
OSC
0
1
1
CDE
0
not used
not used
EFR
not used
1
0
The internal logic and LCD drive signals of the PCF8536 are timed either by the built-in
oscillator or from an external clock.
Internal clock: When the internal oscillator is used, all LCD and PWM signals are
generated from it. The oscillator runs at nominal 230 kHz. The relationship between this
frequency and the LCD frame frequency is detailed in Section 8.1.9 . The relationship
between this frequency and the PWM frame frequency is detailed in Section 8.1.10 .
Control over the internal oscillator is made with the OSC bit (see Section 8.1.5 ). The
internal oscillator is also switched on or off under certain combinations of modes which
are described in Table 13 .
PCF8536
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 21 February 2012
? NXP B.V. 2012. All rights reserved.
13 of 74
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