NEC UPD703116 User Manual page 360

32-bit single-chip microcontrollers

Table of Contents

Figure 9-74. Capture Operation: Mode with 16-Bit Buffer

READ_ENABLE_P

CVPEm0 register

CVSEm0 register

To operate TM2n in the mode with 16-bit buffer, perform capture at least twice at the start of operation

and read the CVPEm0 register. Also, read the CVPEm0 register after performing capture at least

Write operation to the CVPEn0 register is not performed at these signal inputs because the CVSEm0

After this timing, write operation from the CVSEm0 register to the CVPEm0 register is enabled.

Remarks 1. f

: Base clock

2. BUFFER: Timing of write operation from CVSEm0 register to CVPEm0 register

CAPTURE_P: Capture trigger signal of main capture register

CAPTURE_S: Capture trigger signal of sub capture register

ED1: Capture event signal input from edge selector

MUXCNT: Count value to sub-channel m

MUXTB0, MUXTB1: Multiplex signal of TM20, TM21

READ_ENABLE_P: Read timing of CVPEm0 register

TB0: Count value of TM20; TB1: Count value of TM21

3. m = 1 to 4, x = 12, 34

y: When x = 12, y = 1, 2, and when x = 34, y = 3, 4

CHAPTER 9 TIMER/COUNTER FUNCTION

(When CMSEx0 Register's TByE1 Bit = 0, TByE0 Bit = 1, CCSEy Bit = 0,

LNKEy Bit = 0, BFEEy Bit = 1, EEVEy Bit = 1, and CSCE0 Register's

SEVEy Bit = 0)

User's Manual U14492EJ5V0UD