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參數資料
| 型號： | W77L32 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 35/74頁 |
| 文件大小： | 871K |
| 代理商： | W77L32 |
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Preliminary W77L32
Publication Release Date: November 2, 2001
- 35 - Revision A1
Table 3. Instruction Timing for W77L32, continued
Instruction
HEX
Op-Code
Bytes
W77L32
Machine Cycles
W77L32
Clock Cycles
8032
Clock Cycles
W77L32 vs.
8032 Speed Ratio
XRL A, R3
6B
1
1
4
12
3
XRL A, R4
6C
1
1
4
12
3
XRL A, R5
6D
1
1
4
12
3
XRL A, R6
6E
1
1
4
12
3
XRL A, R7
6F
1
1
4
12
3
XRL A, @R0
66
1
1
4
12
3
XRL A, @R1
67
1
1
4
12
3
XRL A, direct
65
2
2
8
12
1.5
XRL A, #data
64
2
2
8
12
1.5
XRL direct, A
62
2
2
8
12
1.5
XRL direct, #data
63
3
3
12
24
2
Intruction Timing
The instruction timing for the W77L32 is an important aspect, especially for those users who wish to
use software instructions to generate timing delays. Also, it provides the user with an insight into the
timing differences between the W77L32 and the standard 8032. In the W77L32 each machine cycle is
four clock periods long. Each clock period is designated a state. Thus each machine cycle is made up
of four states, C1, C2, C3 and C4 in that order. Due to the reduced time for each instruction execution,
both the clock edges are used for internal timing. Hence it is important that the duty cycle of the clock
be as close to 50% as possible to avoid timing conflicts. As mentioned earlier, the W77L32 does one
op-code fetch per machine cycle. Therefore, in most of the instructions, the number of machine cycles
needed to execute the instruction is equal to the number of bytes in the instruction. Of the 256
available op-codes, 128 of them are single cycle instructions. Thus more than half of all op-codes in
the W77L32 are executed in just four clock periods. Most of the two-cycle instructions are those that
have two byte instruction codes. However there are some instructions that have only one byte
instructions, yet they are two cycle instructions. One instruction which is of importance is the MOVX
instruction. In the standard 8032, the MOVX instruction is always two machine cycles long. However in
the W77L32, the user has a facility to stretch the duration of this instruction from 2 machine cycles to 9
machine cycles. The RD and WR strobe lines are also proportionately elongated. This gives the user
flexibility in accessing both fast and slow peripherals without the use of external circuitry and with
minimum software overhead. The rest of the instructions are either three, four or five machine cycle
instructions. Note that in the W77L32, based on the number of machine cycles, there are five different
types, while in the standard 8032 there are only three. However, in the W77L32 each machine cycle is
made of only 4 clock periods compared to the 12 clock periods for the standard 8032. Therefore, even
though the number of categories has increased, each instruction is at least 1.5 to 3 times faster than
the standard 8032 in terms of clock periods.
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相關代理商/技術參數 |
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| W77L516A25DL | 功能描述:IC MCU 8-BIT 64K FLASH 40-DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數:121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數據轉換器:A/D 34x10b，D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| W77L516A25FL | 功能描述:IC MCU 8-BIT 64K FLASH 44-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數:121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數據轉換器:A/D 34x10b，D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
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