参数资料
| 型号： | COP8SAA728M9 |
| 厂商： | National Semiconductor |
| 文件页数： | 11/62页 |
| 文件大小： | 0K |
| 描述： | IC MCU OTP 8BIT 1K 28SOIC |
| 标准包装： | 26 |
| 系列： | COP8™ 8SA |
| 核心处理器： | COP8 |
| 芯体尺寸： | 8-位 |
| 速度： | 10MHz |
| 连通性： | Microwire/Plus（SPI） |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 24 |
| 程序存储器容量： | 1KB（1K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 64 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
| 其它名称： | *COP8SAA728M9 COP8SAA728M9B |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页当前第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页
6.0 Functional Description (Continued)
The contents of data registers and RAM are unknown fol-
lowing the on-chip reset.
6.8 OSCILLATOR CIRCUITS
There are four clock oscillator options available: Crystal
Oscillator with or without on-chip bias resistor, R/C Oscillator
with on-chip resistor and capacitor, and External Oscillator.
The oscillator feature is selected by programming the ECON
register, which is summarized in
Table 2.
TABLE 2. Oscillator Option
ECON4
ECON3
Oscillator Option
0
External Oscillator
1
0
Crystal Oscillator without Bias Resistor
0
1
R/C Oscillator
1
Crystal Oscillator with Bias Resistor
6.8.1 Crystal Oscillator
The crystal Oscillator mode can be selected by programming
ECON Bit 4 to 1. CKI is the clock input while G7/CKO is the
clock generator output to the crystal. An on-chip bias resistor
connected between CKI and CKO can be enabled by pro-
gramming ECON Bit 3 to 1 with the crystal oscillator option
selection. The value of the resistor is in the range of 0.5M to
2M (typically 1.0M).
Table 3 shows the component values
required for various standard crystal values. Resistor R2 is
only used when the on-chip bias resistor is disabled.
Figure
12 shows the crystal oscillator connection diagram.
TABLE 3. Crystal Oscillator Configuration,
T
A = 25C, VCC =5V
R1 (k
)R2 (M) C1 (pF) C2 (pF)
CKI Freq. (MHz)
0
1
30
15
0
1
32
10
0
1
45
30–36
4
5.6
1
100
100–156
0.455
6.8.2 External Oscillator
The External Oscillator mode can be selected by program-
ming ECON Bit 3 to 0 and ECON Bit 4 to 0. CKI can be
driven by an external clock signal provided it meets the
specified duty cycle, rise and fall times, and input levels.
G7/CKO is available as a general purpose input G7 and/or
Halt control.
Figure 13 shows the external oscillator connec-
tion diagram.
6.8.3 R/C Oscillator
The R/C Oscillator mode can be selected by programming
ECON Bit 3 to 1 and ECON Bit 4 to 0. In R/C oscillation
mode, CKI is left floating, while G7/CKO is available as a
general purpose input G7 and/or HALT control. The R/C
controlled oscillator has on-chip resistor and capacitor for
maximum R/C oscillator frequency operation. The maximum
frequency is 6 MHz ± 35% for V
CC between 4.5V to 5.5V
and temperature range of 40C to +85C. For max fre-
quency operation, the CKI pin should be left floating. For
lower frequencies, an external capacitor should be con-
nected between CKI and either V
CC or GND. Immunity of the
R/C oscillator to external noise can be improved by connect-
ing one half the external capacitance to V
CC and one half to
GND. PC board trace length on the CKI pin should be kept
as short as possible.
Table 4 shows the oscillator frequency
as a function of approximate external capacitance on the
CKI pin.
Figure 14 shows the R/C oscillator configuration.
TABLE 4. R/C Oscillator Configuration,
40C to +85C, V
CC = 4.5V to 5.5V,
OSC Freq. Variation of ± 35%
External Capacitor
R/C OSC Freq
Instr. Cycle
(pF)
(MHz)
(s)
0
6
1.667
13
4
2.5
62
2
5.0
120
1
10
5600
32 kHz
312.5
DS012838-15
FIGURE 10. Reset Timing (Power-On Reset Enabled)
with V
CC Tied to RESET
DS012838-16
FIGURE 11. Reset Circuit Using Power-On Reset
COP8SA
Family
www.national.com
18
相关PDF资料 |
PDF描述 |
|---|---|
| COP8SAA720N9 | IC MCU OTP 8BIT 1K 20DIP |
| P87LPC764BDH,512 | IC 80C51 MCU 4K OTP 20-TSSOP |
| COP8SAA720M9 | IC MCU OTP 8BIT 1K 20SOIC |
| COP8SAA716N9 | IC MCU OTP 8BIT 1K 16DIP |
| COP8SAA716M9 | IC MCU OTP 8BIT 1K 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| COP8SAA728N8 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| COP8SAA728N9 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| COP8SAA7SLB8 | 功能描述:IC MCU OTP 8BIT 1K 28LAMINATECSP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8SA 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN，SCI，SPI 外围设备:POR，PWM，温度传感器，WDT 输入/输出数:21 程序存储器容量:40KB（20K x 16） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| COP8SAA7SLB9 | 功能描述:IC MCU OTP 8BIT 1K 28LAMINATECSP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8SA 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN，SCI，SPI 外围设备:POR，PWM，温度传感器，WDT 输入/输出数:21 程序存储器容量:40KB（20K x 16） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| COP8SAB5 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS ROM Based and One-Time Programmable OTP Microcontroller with 1k to 4k Memory, Power On Reset, and Very Small Packaging |
发布紧急采购，3分钟左右您将得到回复。