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DSPIC30F4012-30I/SP 产品设计参考手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
DIP-28
描述:
MICROCHIP DSPIC30F4012-30I/SP 芯片, 16位数字信号控制器, 48K闪存, 20MIPS
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DSPIC30F4012-30I/SP数据手册
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若手册格式错乱，请下载阅览PDF原文件
2004 Microchip Technology Inc. DS80169E-page 5
dsPIC30F Family Reference Manual
8. Page 4-10, Section 4.4.3 PSV Timing
On page 4-10, Section 4.4.3 PSV Timing should
be replaced with the following:
4.4.3 PSV Timing
Instructions that use PSV will require two extra instruction cycles to complete execution, except
the following instructions that require only one extra cycle to complete execution:
-The MAC class of instructions with data pre-fetch operands
-All MOV instructions including the MOV.D instruction
The additional instruction cycles are used to fetch the PSV data on the program memory bus.
4.4.3.1
Using PSV in a REPEAT Loop
Instructions that use PSV within a REPEAT loop eliminate the extra instruction cycle(s) required
for the data access from program memory, hence incurring no overhead in execution time.
However, the following iterations of the REPEAT loop will incur an overhead of two instruction
cycles to complete execution:
-The first iteration
-The last iteration
-Instruction execution prior to exiting the loop due to an interrupt
-Instruction execution upon re-entering the loop after an interrupt is serviced
4.4.3.2
PSV and Instruction Stalls
Refer to Item 5 in this FRM Errata Document for more information about instruction stalls using
PSV.
9. Page 5-5, Table 5-1 NVMCON Register
Values
On page 5-5, Table 5-1 NVMCON Register Values
should be replaced with the following:
.
Table 5-1: NVMCON Register Values
NVMCON Register Values for RTSP Program and Erase Operations
Memory Type Operation Data Size NVMCON Value
Flash PM
Erase 1 row (32 instr. words) 0x4041
Program 1 row (32 instr. words) 0x4001
Data EEPROM
Erase
1 data word 0x4044
16 data words 0x4045
Program
1 data word 0x4004
16 data words 0x4005
Configuration Register
Write
(see Note)
1 config. register 0x4008
Note: The device configuration registers may be written to a new value without performing
an erase cycle.
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