参数资料
型号: ST10F269Z2Q3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144
封装: 28 X 28 MM, PLASTIC, QFP-144
文件页数: 131/160页
文件大小: 1541K
代理商: ST10F269Z2Q3
ST10F269
72/160
Pin P3.12 (BHE/WRH) is another pin with an
alternate output function, however, its structure is
slightly different.
After reset the BHE or WRH function must be
used
depending
on
the
system
start-up
configuration. In either of these cases, there is no
possibility to program any port latches before.
Thus,
the
appropriate
alternate
function
is
selected automatically. If BHE/WRH is not used in
the system, this pin can be used for general
purpose I/O by disabling the alternate function
(BYTDIS = ‘1’ / WRCFG=’0’).
Note: Enabling the BHE or WRH function automatically enables the P3.12 output driver. Setting bit
DP3.12=’1’ is not required.
During bus hold pin P3.12 is switched back to its standard function and is then controlled by
DP3.12 and P3.12. Keep DP3.12 = ’0’ in this case to ensure floating in hold mode.
Figure 29 : Block Diagram of Pins P3.15 (CLKOUT) and P3.12 (BHE/WRH)
Direction
Latch
Write DP3.x
Read DP3.x
Port Output
Latch
Write P3.x
Read P3.x
Intern
al
Bu
s
MUX
0
1
MUX
0
1
Alternate
Data
Output
MUX
0
1
“1”
Input
Latch
Clock
P3.12/BHE
P3.15/CLKOUT
Output
Buffer
x = 15, 12
Alternate
Function
Enable
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相关代理商/技术参数
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ST10F269Z2T6 功能描述:16位微控制器 - MCU ST10F272 16B MCU RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT