Datasheet

Section 10 Timer B1
Rev. 4.00 Mar. 15, 2006 Page 145 of 556
REJ09B0026-0400
10.3 Register Descriptions
The timer B1 has the following registers.
• Timer mode register B1 (TMB1)
• Timer counter B1 (TCB1)
• Timer load register B1 (TLB1)
10.3.1 Timer Mode Register B1 (TMB1)
TMB1 selects the auto-reload function and input clock.
Bit Bit Name
Initial
Value R/W Description
7 TMB17 0 R/W Auto-reload function select
0: Interval timer function selected
1: Auto-reload function selected
6 to 3  All 1  Reserved
These bits are always read as 1.
2
1
0
TMB12
TMB11
TMB10
0
0
0
R/W
R/W
R/W
Clock select
000: Internal
clock: φ/8192
001: Internal clock: φ/2048
010: Internal clock: φ/512
011: Internal clock: φ/256
100: Internal clock: φ/64
101: Internal clock: φ/16
110: Internal clock: φ/4
111: External event (TMIB1): rising or falling edge*
Note: * The edge of the external event signal is selected
by bit IEG1 in the interrupt edge select register 1
(IEGR1). See section 3.2.1, Interrupt Edge
Select Register 1 (IEGR1), for details. Before
setting TMB12 to TMB10 to 1, IRQ1 in the port
mode register 1 (PMR1) should be set to 1.