HCSXXX Datasheet, PDF (13/28 Pages) Microchip Technology – Memory Programming Specification

FIGURE 4-1:
HCS201 AND HCS412 OSCILLATOR TUNING
Preload Datastream
with 0x7 for OSCCAL⁽¹⁾
Store Average Value
as F_LOW
Preload Datastream
with 400 µs Time Element
Measure Calibration Pulses
as Time Elements
HCSXXX
Interpolate
OSCCAL
Reset Target⁽²⁾
Program Target
Poll Target for End
of Write Cycle
Preload Datastream
with Interpolated OSCCAL
Reset Target⁽²⁾
Preload Datastream
with 0x8 for OSCCAL⁽¹⁾
Preload Datastream
with 400 µs Time Element
Program First Word
of Target
Poll Target for End
of Write Cycle
Program First Word
of Target
Reset Target⁽²⁾
Program Remaining
Target
Store Average Value
as F_HIGH
Preload Desired
Baud Rate
Program Target
Measure Calibration Pulses
as Time Elements
Note 1: -8_d = 0x7, and +7_d = 0x8
2: Cycle Power
 2004 Microchip Technology Inc.
Preliminary
DS41256A-page 13