TMP91CY28 Datasheet, PDF (19/22 Pages) Toshiba Semiconductor – Original CMOS 16-Bit Microcontroller

TMP91CY28
4.7 Interrupts and Timer Capture
Note: In the tables below, the letter x represents the f_FPH period, which varies, depending on the
programming of the clock gear function. The cycle period of f_FPH is half that of the CPU system
clock, f_SYS.
(1) NMI and INT0 to INT4 interrupts
Parameter
Low pulse width for NMI and INT0 to INT4
High pulse width for INT0 to INT4
Equation
Symbol
Min Max
t_INTAL
t_INTAL
4X 40
4X 40
10 MHz
Min Max
440
440
Unit
ns
ns
(2) INT5 to INT8 interrupts and capture
The input pulse widths for INT5 to INT8 vary with the selected system clock and prescaler
clock. The following table shows the pulse widths for different operation clocks:
Selected
Prescaler
Clock
<PRCK1:0>
t_INTBL
t_INTBH
(INT5 to INT8 low-level pulse width) (INT5 to INT8 high-level pulse width)
Equation fFPH 10 MHz
Equation
f_FPH 10 MHz
Min
Min
Min
Min
00 (f_FPH)
8X 100
900
8X  100
900
10 (fc/16)
128Xc 0.1
12.9
128Xc 0.1
12.9
Unit
ns
Ps
Note: Xc indicates the period of the high-speed oscillator clock (fc).
4.8 SCOUT Pin
Parameter
High-level pulse width
Low-level pulse width
Symbol
t_SCH
t_SCL
Equation
Min Max
0.5T  25
0.5T  25
10 MHz
Min Max
25
25
Condition
V_CC 1.8 to 2.6 V
V_CC 1.8 to 2.6 V
Unit
ns
ns
Note: In the table above, the letter T represents the cycle period of the SCOUT output clock.
Measurement condition
•Output levels: High 0.7 V_CC/Low 0.3 V_CC, C_L 10 pF
SCOUT
t_SCH
t_SCL
91CY28-17
2004-02-10