Fujitsu FR81S User Manual
CHAPTER 27: UP/DOWN COUNTER
1. Overview
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : UP/DOWN COUNTER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
3
1. Overview
This section explains the overview of the up/down counter.
The up/down counter counts up or down depending on the setting.
The 16-bit up/down counter can be used as an 8-bit up/down counter by using its low-order byte only.
The 8-bit up/down counter can count up or down in the range of "00
H
" to "FF
H
". The 16-bit up/down
counter can count up or down in the range of "0000
H
" to "FFFF
H
".
This product incorporates 2 channels of the 16-bit up/down counter. However, only the low-order byte can
be used as the 8-bit up/down counter. So, the number of channels usable for 8 and 16 bits is 2 in total.
be used as the 8-bit up/down counter. So, the number of channels usable for 8 and 16 bits is 2 in total.
MB91520 Series
MN705-00010-1v0-E
1010