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H8SX/1663R Datasheet(PDF) 1273 Page - Renesas Technology Corp

Part # H8SX/1663R
Description  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1504 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX/1663R Datasheet(HTML) 1273 Page - Renesas Technology Corp

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Section 28 Power-Down Modes
Rev. 2.00 Sep. 24, 2008 Page 1241 of 1468
REJ09B0412-0200
Bit
Bit Name
Initial
Value
R/W
Description
12
11
10
9
8
STS4
STS3
STS2
STS1
STS0
0
1
1
1
1
R/W
R/W
R/W
R/W
R/W
Standby Timer Select 4 to 0
These bits select the time the MCU waits for the clock to
settle when software standby mode is cleared by an
interrupt or when a transition is made from subclock
operation to main clock operation. With a crystal
resonator, refer to table 28.2 and make a selection
according to the operating frequency so that the standby
time is at least equal to the oscillation settling time. With
an external clock, a PLL circuit settling time is necessary.
Refer to table 28.2 to set the standby time.
While oscillation is being settled, the timer is counted on
the P
φ clock frequency. Careful consideration is required
in multi-clock mode.
00000: Reserved
00001: Reserved
00010: Reserved
00011: Reserved
00100: Reserved
00101: Standby time = 64 states
00110: Standby time = 512 states
00111: Standby time = 1024 states
01000: Standby time = 2048 states
01001: Standby time = 4096 states
01010: Standby time = 16384 states
01011: Standby time = 32768 states
01100: Standby time = 65536 states
01101: Standby time = 131072 states
01110: Standby time = 262144 states
01111: Standby time = 524288 states
1xxxx: Reserved



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