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参数资料
| 型号： | MC68HC16S2CPU25 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, 25.17 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | TQFP-100 |
| 文件页数： | 47/104页 |
| 文件大小： | 812K |
| 代理商： | MC68HC16S2CPU25 |
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MC68HC16S2
MOTOROLA
MC68HC16S2TS/D
47
4.3.1 Condition Code Register
S — STOP Enable
0 = Stop clock when LPSTOP instruction is executed
1 = Perform NOP when LPSTOP instruction is executed
MV — Accumulator M overflow flag
MV is set when an overflow into AM35 has occurred.
H — Half Carry Flag
H is set when a carry from A3 or B3 occurs during BCD addition.
EV — Extension Bit Overflow Flag
EV is set when an overflow into AM31 has occurred.
N — Negative Flag
N is set when the MSB of a result register is set.
Z — Zero Flag
Z is set when all bits of a result register are zero.
V — Overflow Flag
V is set when a two’s complement overflow occurs as the result of an operation.
C — Carry Flag
C is set when a carry or borrow occurs during an arithmetic operation. This flag is also used during shift
and rotate to facilitate multiple word operations.
IP[2:0] — Interrupt Priority Field
The priority value in this field (0 to 7) is used to mask interrupts.
SM — Saturate Mode Bit
When SM is set, if either EV or MV is set, data read from AM using TMER or TMET is given maximum
positive or negative value, depending on the state of the AM sign bit before overflow.
PK[3:0] — Program Counter Address Extension Field
This field is concatenated with the program counter to form a 20-bit address.
4.4 Data Types
The CPU16 supports the following data types:
Bit data
8-bit (byte) and 16-bit (word) integers
32-bit long integers
16-bit and 32-bit signed fractions (MAC operations only)
20-bit effective address consisting of 16-bit page address plus 4-bit extension
A byte is eight bits wide and can be accessed at any byte location. A word is composed of two consec-
utive bytes, and is addressed at the lower byte. Instruction fetches are always accessed on word bound-
aries. Word operands are normally accessed on word boundaries as well, but can be accessed on odd
byte boundaries, with a substantial performance penalty.
To be compatible with the M68HC11, misaligned word transfers and misaligned stack accesses are al-
lowed. Transferring a misaligned word requires two successive byte operations.
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For More Information On This Product,
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相关代理商/技术参数 |
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| MC68HC16Z1CAG | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC16Z1CAG16 | 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM 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 |
| MC68HC16Z1CAG16 | 制造商:Freescale Semiconductor 功能描述:IC16-BIT MICROCONTROLLER |
| MC68HC16Z1CAG20 | 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM 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 |
| MC68HC16Z1CAG20 | 制造商:Freescale Semiconductor 功能描述:Microcontroller |
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