NEC UPD703116 User Manual page 348

(10) Timer 2 time base status register 0 (TBSTATE0)
The TBSTATE0 register indicates the status of TM2n (n = 0, 1).
This register can be read/written in 16-bit units.
When the higher 8 bits of the TBSTATE0 register are used as the TBSTATE0H register, and the lower 8 bits
are used as the TBSTATE0L register, they can be read/written in 8-bit or 1-bit units.
Caution The ECFEn, RSFEn, and UDFEn bits are read-only bits.
15 14 13
TBSTATE0 0 0 0
Bit position Bit name
11, 3 OVFEn
10, 2 ECFEn
9, 1 RSFEn
8, 0 UDFEn
Remark n = 0, 1
348
CHAPTER 9 TIMER/COUNTER FUNCTION
12 <11> <10> <9> <8> 7
0 OVFE1 ECFE1 RSFE1 UDFE1 0
Indicates TM2n overflow status.
0: No overflow
1: Overflow
Caution If write access to the TBSTATE0 register is performed while
overflow is not detected, the OVFEn bit is cleared (0).
Indicates the ECLR signal input status.
0: Low level
1: High level
Indicates the TM2n count status.
0: TM2n is not counting.
1: TM2n is counting (either up or down)
Indicates the TM2n up/down count status.
0: TM2n is in the down-count mode.
1: TM2n is in the up-count mode.
User's Manual U14492EJ5V0UD
6 5 4 <3> <2> <1>
0 0 0 OVFE0 ECFE0 RSFE0
Function
<0> Address Initial value
UDFE0 FFFFF664H 0101H