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| 型号： | COP8CBR9KMT8 |
| 厂商： | National Semiconductor |
| 文件页数： | 43/111页 |
| 文件大小： | 0K |
| 描述： | IC MCU EEPROM 8BIT 32K 56-TSSOP |
| 标准包装： | 34 |
| 系列： | COP8™ 8C |
| 核心处理器： | COP8 |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 连通性： | Microwire/Plus（SPI），UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 49 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 数据转换器： | A/D 16x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 56-TFSOP（0.240"，6.10mm 宽） |
| 包装： | 管件 |
| 其它名称： | *COP8CBR9KMT8 |
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SNOS535I – OCTOBER 2000 – REVISED MARCH 2013
Table 5-7. PGMTIM Register Format (continued)
PGMTIM
Register Bit
CKI Frequency Range
7
6
5
4
3
2
1
0
0
1
0
1
2 MHz–2.67 MHz
0
1
0
1
0
1
0
2.625 MHz–3.5 MHz
0
1
0
1
0
1
3.5 MHz–4.67 MHz
0
1
0
1
4.5 MHz–6 MHz
0
1
0
1
6 MHz–8 MHz
0
1
0
1
7.5 MHz–10 MHz
R
R/W
5.10.4 MANEUVERING BACK AND FORTH BETWEEN FLASH MEMORY AND BOOT ROM
When using ISP, at some point, it will be necessary to maneuver between the flash program memory and
the Boot ROM, even when using customized ISP routines. This is because it's not possible to execute
from the flash program memory while it's being programmed.
Two instructions are available to perform the jumping back and forth: Jump to Boot (JSRB) and Return to
Flash (RETF). The JSRB instruction is used to jump from flash memory to Boot ROM, and the RETF is
used to return from the Boot ROM back to the flash program memory. See Instruction Set for specific
details on the operation of these instructions.
The JSRB instruction must be used in conjunction with the Key register. This is to prevent jumping to the
Boot ROM in the event of run-away software. For the JSRB instruction to actually jump to the Boot ROM,
the Key bit must be set. This is done by writing the value shown in Table 5-8 to the Key register. The Key
is a 6 bit key and if the key matches, the KEY bit will be set for 8 instruction cycles. The JSRB instruction
must be executed while the KEY bit is set. If the KEY does not match, then the KEY bit will not be set and
the JSRB will jump to the specified location in the flash memory. In emulation mode, if a breakpoint is
encountered while the KEY is set, the counter that counts the instruction cycles will be frozen until the
breakpoint condition is cleared. If an interrupt occurs while the key is set, the key will expire before
interrupt service is complete. It is recommended that the software globally disable interrupts before setting
the key. The Key register is a memory mapped register. Its format when writing is shown in Table 5-8. In
normal operation, it is not necessary to test the KEY bit before using the JSRB instruction. The additional
instructions required to test the key may cause the key to time-out before the JSRB can be executed.
Table 5-8. KEY Register Write Format
KEY When Writing
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
0
1
0
X
Bits 7–2:
Key value that must be written to set the KEY bit.
Bits 1–0:
Don't care.
5.10.5 FORCED EXECUTION FROM BOOT ROM
When the user is developing a customized ISP routine, code lockups due to software errors may be
encountered. The normal, and preferred, method to recover from these conditions is to reprogram the
device with the corrected code by either an external parallel programmer or the emulation tools. As a last
resort, when this equipment is not available, there is a hardware method to get out of these lockups and
force execution from the Boot ROM MICROWIRE/PLUS routine. The customer will then be able to erase
the Flash Memory code and start over.
Copyright 2000–2013, Texas Instruments Incorporated
Functional Description
37
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| COP8CCE9 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10-Bit A/D and Brownout Reset |
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| COP8CCE9HLQ9 | 功能描述:IC MCU FLASH 8BIT 8K A/D 44LLP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:COP8™ 8C 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 |
| COP8CCE9HVA7 | 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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