参数资料
型号: PCF8579H/1:118
厂商: NXP Semiconductors
文件页数: 16/41页
文件大小: 0K
描述: IC LCD COLUMN DRIVER 64-LQFP
标准包装: 1,500
显示器类型: LCD
配置: 点阵
接口: I²C
电流 - 电源: 9µA
电源电压: 2.5 V ~ 6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 带卷 (TR)
其它名称: 935276303118
PCF8579H/1-T
PCF8579H/1-T-ND
NXP Semiconductors
PCF8579
LCD column driver for dot matrix graphic displays
In multiple device applications, the hardware subaddress pins of the PCF8579s (A0 to A3)
are connected to V SS or V DD to represent the desired hardware subaddress code. If two or
more devices share the same slave address, then each device must be allocated a
unique hardware subaddress.
slave address
R / W
acknowledge by
all addressed
PCF8578s / PCF8579s
acknowledge
by A0, A1, A2 and A3
selected PCF8578s /
PCF8579s only
S
S
0 1 1 1 1 0 A 0 A C
COMMAND
A
DISPLAY DATA
A
P
0
1 byte
n ≥ 0 byte(s)
(a)
n ≥ 0 byte(s)
update data pointers
and if necessary,
subaddress counter
msa830
a. Master transmits to slave receiver (write mode)
acknowledge by
all addressed
PCF8578s / PCF8579s
acknowledge
no acknowledge
slave address
S
slave address
S
from master
from master
S
0 1 1 1 1 0 A 0 A C
COMMAND
A S
0 1 1 1 1 0 A 1 A
DATA
A
DATA
1
P
0
0
R / W
n ≥ 1 byte
R / W
n bytes
last byte
at this moment master
transmitter becomes a
master receiver and
PCF8578/PCF8579 slave
receiver becomes a
slave transmitter
(b)
b. Master reads after sending command string (write commands; read data)
acknowledge by
update data pointers
and if necessary
subaddress counter
msa832
all addressed
PCF8578s / PCF8579s
slave address
S
acknowledge
from master
no acknowledge
from master
S
0 1 1 1 1 0 A 1 A
DATA
A
DATA
1
P
0
R / W
n bytes
(c)
last byte
update data pointers
and if necessary,
subaddress counter
msa831
c. Master reads slave immediately after sending slave address (read mode)
Fig 13. I 2 C-bus protocol
PCF8579_5
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 11 May 2009
16 of 41
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