tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 167

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Note 1: The prescaler’s output clock φTn must be selected such that the relationship φTn < fsys/2 is
Note 2: Do not change the clock gear value while the timer is operating.
Note 3: The - character meams “Don’t use”.
Clock Selection
3.9.2
Peripheral
<FPSEL>
0 (fgear)
1 (fc)
satisfied (i.e., φTn must be slower than fsys/2).
Functional description of each circuit
(1) Prescaler
has a frequency of fperiph, fperiph/2 or fperiph/4 as selected by SYSCR0<PRCK1:PRCK0> in the
CG block.
before division by the clock gear.
the prescaler to start counting and writing 0 causes it to clear itself and stop counting. Table 3.9.3
shows the resolutions of the prescaler output clocks.
<GEAR1:0>
The TMP1942 has a 9-bit prescaler to supply a clock to TMRA01. The prescaler’s input clock φT0
fperiph is either the clock fgear as selected by SYSCR1<FPSEL> in the CG block or the clock fc
The prescaler is set to either run or stop by TA01RUN<TA0PRUN>. Writing a 1 to this bit causes
Clock Gear
01 (fc/2)
10 (fc/4)
11 (fc/8)
01 (fc/2)
10 (fc/4)
11 (fc/8)
00 (fc)
00 (fc)
Value
Table 3.9.3 Prescaler Output Clock Resolutions
Prescaler Clock
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
00 (fperiph/4)
01 (fperiph/2)
10 (fperiph)
<PRCK1:0>
Selected
TMP1942CY/CZ-166
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
2
2
3
3
3
3
4
5
4
6
5
(0.125 μs)
(0.125 μs)
φT1
(0.25 μs)
(0.25 μs)
(0.25 μs)
(0.25 μs)
(0.5 μs)
(1.0 μs)
(0.5 μs)
(2.0 μs)
(1.0 μs)
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Prescaler Output Clock Resolution
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
3
3
3
5
4
6
5
4
7
6
5
8
7
6
5
4
5
4
5
4
5
φT4
(0.25 μs)
(0.25 μs)
(0.25 μs)
(1.0 μs)
(0.5 μs)
(2.0 μs)
(1.0 μs)
(0.5 μs)
(4.0 μs)
(2.0 μs)
(1.0 μs)
(8.0 μs)
(4.0 μs)
(2.0 μs)
(1.0 μs)
(0.5 μs)
(1.0 μs)
(0.5 μs)
(1.0 μs)
(0.5 μs)
(1.0 μs)
⎯
⎯
⎯
TMP1942CY/CZ
fc/25 (1.0 μs)
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
φT16
7
6
5
8
7
6
8
7
10
8
7
6
5
7
6
7
6
5
7
6
5
9
9
(4.0 μs)
(2.0 μs)
(1.0 μs)
(8.0 μs)
(4.0 μs)
(2.0 μs)
(8.0 μs)
(4.0 μs)
(8.0 μs)
(4.0 μs)
(2.0 μs)
(1.0 μs)
(4.0 μs)
(2.0 μs)
(4.0 μs)
(2.0 μs)
(1.0 μs)
(4.0 μs)
(2.0 μs)
(1.0 μs)
(16 μs)
(16 μs)
(32 μs)
fc/214 (512 μs)
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
fc/2
@fc = 32 MHz
φT256
12
13
12
13
12
11
10
11
10
11
11
10
11
10
11
10
11
10
9
9
9
9
9
(128 μs)
(256 μs)
(128 μs)
(256 μs)
(128 μs)
(16 μs)
(16 μs)
(16 μs)
(16 μs)
(16 μs)
(64 μs)
(32 μs)
(64 μs)
(32 μs)
(64 μs)
(64 μs)
(32 μs)
(64 μs)
(32 μs)
(64 μs)
(32 μs)
(64 μs)
(32 μs)