收藏本站
参数资料
型号： M38234G4FP
元件分类： 微控制器/微处理器
英文描述： 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
封装： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件页数： 25/64页
文件大小： 922K
代理商： M38234G4FP
Rev.2.02
Jun 19, 2007
page 29 of 73
REJ03B0146-0202
3823 Group
TIMERS
The 3823 group has five timers: timer X, timer Y, timer 1, timer 2,
and timer 3. Timer X and timer Y are 16-bit timers, and timer 1,
timer 2, and timer 3 are 8-bit timers.
All timers are down count timers. When the timer reaches “0016”,
an underflow occurs at the next count pulse and the correspond-
ing timer latch is reloaded into the timer and the count is
continued. When a timer underflows, the interrupt request bit cor-
responding to that timer is set to “1”.
Read and write operation on 16-bit timer must be performed for
both high and low-order bytes. When reading a 16-bit timer, read
the high-order byte first. When writing to a 16-bit timer, write the
low-order byte first. The 16-bit timer cannot perform the correct
operation when reading during the write operation, or when writing
during the read operation.
Fig. 22 Timer block diagram
CNTR0 active
edge switch bit
Timer 1 count source
selection bit
Real time port
control bit “0”
“1”
P55/CNTR1
“0”
f(XIN)/16
(f(
SUB)16 in low-speed mode)
CNTR1 active
edge switch bit
“10”
Timer Y stop
control bit
Falling edge detection
Period
measurement mode
Timer Y
interrupt
request
Pulse width HL continuously measurement mode
Rising edge detection
“00”,“01”,“11”
Timer Y operating
mode bits
Timer X
interrupt
request
Timer X mode register
write signal
P54/CNTR0
Q
T
S
P54 direction register
Pulse output mode
P54 latch
Timer X stop
control bit
“0”
“1”
Timer X write
control bit
Q D
Latch
Q D
Latch
“1”
“0”
“1”
“10”
Timer X operat-
ing mode bits
“00”,“01”,“11”
f(XIN)/16
(f(SUB)/16 in low-speed mode)
Pulse width
measurement
mode
CNTR0 active
edge switch bit
Pulse output
mode
Q
T
S
“0”
P56 direction register
P56 latch
“1”
TOUT output
active edge
switch bit
Timer 2 write
control bit
“0”
“1”
TOUT output
control bit
“1”
P56/TOUT
f(SUB)
Timer 3 count
source selection bit
“0”
“1”
Timer 2
interrupt
request
Timer 3
interrupt
request
Timer 2 count source
selection bit
Timer 1
interrupt
request
Data bus
f(XIN)/16
(f(SUB)/16 in low-speed mode])
f(XIN)/16
(f(SUB)/16 in low-speed mode)
f(XIN)/16(f(SUB)/16 in low-speed mode)
CNTR0
interrupt
request
CNTR1
interrupt
request
Timer Y operating mode bits
“00”,“01”,“10”
“11”
Real time port
control bit “1”
P52 latch
Real time port
control bit “1”
P53 latch
Timer Y (low) (8)
Timer Y (high) (8)
Timer 3 latch (8)
Timer 3 (8)
Timer 1 latch (8)
Timer 1 (8)
Timer 2 latch (8)
Timer 2 (8)
Timer X (low) (8)
Timer X (high) (8)
Timer X (low) latch (8)
Timer X (high) latch (8)
Timer Y (low) latch (8)
Timer Y (high) latch (8)
TOUT output
control bit
“0”
P52
P53
P52 direction register
P53 direction register
P52 data for real time port
P53 data for real time port
f(SUB) is the source oscillation frequency in low-speed mode.
f(SUB) shows the oscillation frequency of XCIN or the on-chip
oscillator.
Internal clock φ is f(SUB)/2 in the low-speed mode.
相关PDF资料
PDF描述
M3823AGFHP 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
M38235G6-XXXFP 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
M38238G8-XXXHP 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
M38254M6-XXXGP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100
M38254M4-XXXGP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100
相关代理商/技术参数
参数描述
M38234G4FP#U0 功能描述:MCU 2/5V 16K 80-QFP QZ-ROM RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR)
M38234G4HP#U0 功能描述:MCU 2/5V 16K 80-LQFP QZ-ROM RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR)
M38235G6FP#U0 功能描述:MCU 2/5V 24K 80-QFP QZ-ROM RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR)
M38235G6HP#U0 功能描述:MCU 2/5V 24K 80-LQFP QZ-ROM RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR)
M38238G8FP#U0 功能描述:MCU 2/5V 32K 80-QFP QZ-ROM RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR)
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*