RX21A_15 Datasheet, PDF (87/132 Pages) Renesas Technology Corp – Renesas MCUs

RX21A Group
5.4.1
Reset Timing
5. Electrical Characteristics
Table 5.27 Reset Timing
Conditions: VCC = AVCC0 = AVCCA = 1.8 to 3.6 V, VSS = AVSS0 = AVSSA = VREFL = VREFL0 = VREFDSL = 0 V,
T_a = –40 to +105°C
Item
Symbol
Min.
Typ.
Max.
Unit
Test
Conditions
RES# pulse
width
Power-on
Deep software standby mode
Software standby mode, low-speed
operating modes 1 and 2
t_RESWP
8
t_RESWD
8
t_RESWS
1
—
—
ms Figure 5.35
—
—
ms Figure 5.36
—
—
ms
Programming or erasure of the ROM or E2 t_RESWF
200
—
—
µs
DataFlash memory or blank checking of the
E2 DataFlash memory
Other than above
t_RESW
200
—
—
µs
Wait time after RES# cancellation
t_RESWT
—
—
912
µs Figure 5.35
Internal reset time
t_RESW2
—
(independent watchdog timer reset, watchdog timer reset,
software reset)
—
1.4
ms
1.55 V
VCC
RES#
Internal reset
tR ESW P
Figure 5.35 Reset Input Timing at Power-On
tR ESW T
RES#
Internal reset
Figure 5.36 Reset Input Timing
t_RESWD, t_RESWS, t_RESWF, t_RESW
t_RESWT
R01DS0129EJ0110 Rev.1.10
Aug 28, 2014
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