upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 737

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

18.8 Control Registers
(1)
Cautions: 1. When set to IDLE1 mode, IDLE2 mode and STOP mode, set PSM1 and PSM0 bit to
Symbol
PSC
R/W
Power save control register (PSC)
This is an 8-bit register that controls the standby function. The STP bit of this register is used to
specify the STOP mode. The PSC register is a special register (refer to 3.2.3 ”Special regis-
ters” on page 70). Data can be written to this register only in a specific sequence so that its
contents are not rewritten by mistake due to a program hang-up.
This register can be read or written in 8-bit or 1-bit units.
NMI2M NMI1M
2. Settings of the NMI2M, NMI1M, and INTM bits are invalid when HALT mode is
3. Be sure to clear bit 5 to 0.
R/W
7
NMI2M
NMI1M
INTM
1 on PSMR register then set STP bit to 1.
released.
STP
0
1
0
1
0
1
0
1
R/W
Figure 18-7: Power Save Control Register (PSC) Format
6
Enables standby mode release through NMI pin input
Disables standby mode release through NMI pin input
Enables standby mode release through INTWDT2 signal
Disables standby mode release through INTWDT2 signal
Enables standby mode release through maskable interrupt request
Disables standby mode release through maskable interrupt request
Normal mode
Standby mode
Standby mode release control through maskable interrupt request
Standby mode release control upon occurrence of INTWDT2
R
5
0
User’s Manual U16702EE3V2UD00
Chapter 18 Standby Function
Standby mode release control by NMI pin input
INTM
R/W
4
Standby mode setting
R
3
0
R
2
0
STP
R/W
1
R
0
0
FFFFF1FEH
Address
After reset
00H
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