Datasheet

dsPIC33EPXXXGM3XX/6XX/7XX
DS70000689D-page 326 2013-2014 Microchip Technology Inc.
REGISTER 22-3: CTMUICON: CTMU CURRENT CONTROL REGISTER
(3)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
ITRIM5 ITRIM4 ITRIM3 ITRIM2 ITRIM1 ITRIM0 IRNG1 IRNG0
bit 15 bit 8
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15-10 ITRIM<5:0>: Current Source Trim bits
011111 = Maximum positive change from nominal current + 62%
011110 = Maximum positive change from nominal current + 60%
000010 = Minimum positive change from nominal current + 4%
000001 = Minimum positive change from nominal current + 2%
000000 = Nominal current output specified by IRNG<1:0>
111111 = Minimum negative change from nominal current – 2%
111110 = Minimum negative change from nominal current – 4%
100010 = Maximum negative change from nominal current – 60%
100001 = Maximum negative change from nominal current – 62%
bit 9-8 IRNG<1:0>: Current Source Range Select bits
11 = 100 Base Current
(2)
10 = 10 Base Current
(2)
01 = Base Current Level
(2)
00 = 1000 Base Current
(1,2)
bit 7-0 Unimplemented: Read as ‘0
Note 1: This current range is not available for use with the internal temperature measurement diode.
2: Refer to the CTMU Current Source Specifications (Table 33-55) in Section 33.0 “Electrical
Characteristics” for the current range selection values.
3: Current sources are not generated when 12-Bit ADC mode is chosen. Current sources are active only
when 10-Bit ADC mode is chosen.