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PIC18F46K40-E/PT 用户编程技术手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
TQFP-44
描述:
8位微控制器 -MCU 64KB Flash, 4KB RAM, 256B EEPROM, 10-bit ADC2, 5-bit DAC, Comp, PWM, CCP, CWG, HLT, WWDT, SCAN/CRC, ZCD, PPS, EUSART, SPI/I2C, IDLE/DOZE/PMD
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PIC18F46K40-E/PT数据手册
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2014-2015 Microchip Technology Inc. DS40001772B-page 5
PIC18(L)F2X/4XK40
2.1 User ID Location
A user may store identification information (User ID) in eight designated locations. The User ID locations are mapped
to 20 0000h-20 000Fh. Each location is 16 bits in length. It is recommended that the Most Significant nibble of each ID
be Fh. In doing so, if the user code inadvertently tries to execute from the ID space, the ID data will execute as a NOP.
Code protection has no effect on these memory locations. Each location may be read with code protection enabled or
disabled.
2.2 Device/Revision ID
The 16-bit Device ID Word is located at 3F FFFEh and the 16-bit Revision ID is located at 3F FFFCh. These locations
are read-only and cannot be erased or modified.
REGISTER 2-1: DEVICEID: DEVICE ID REGISTER
RRRRRRRR
DEV15 DEV14 DEV13 DEV12 DEV11 DEV10 DEV9 DEV8
bit 15 bit 8
RRRRRRRR
DEV7 DEV6 DEV5 DEV4 DEV3 DEV2 DEV1 DEV0
bit 7 bit 0
Legend:
R = Readable bit ‘1’ = Bit is set 0’ = Bit is cleared x = Bit is unknown
bit 15-0 DEV<15:0>: Device ID bits
REGISTER 2-2: REVISIONID: REVISION ID REGISTER
RRRRRRRR
1010 MJRREV<5:2>
bit 15 bit 8
RRRRRRRR
MJRREV<1:0> MNRREV<5:0>
bit 7 bit 0
Legend:
R = Readable bit ‘1’ = Bit is set 0’ = Bit is cleared x = Bit is unknown
bit 15-12 Read as ‘1010’
These bits are fixed with value, ‘1010’, for all devices in this programming specification.
bit 11-6 MJRREV<5:0>: Major Revision ID bits
These bits are used to identify a major revision. A major revision is indicated by an all layer revision
(A0, B0, C0, etc...).
Revision A = 6’b00_0000
bit 5-0 MNRREV<5:0>: Minor Revision ID bits
These bits are used to identify a minor revision.
Revision A0 = 6’b00_0000
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