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EM78P447N
8-Bit Microcontroller with OTP ROM
Product Specification (V1.1) 03.30.2005
• 19
(This specification is subject to change without further notice)
NOTE
After waking up from the SLEEP2 mode, WDT is automatically enabled. The
WDT enabled/disabled operation after waking up from SLEEP2 mode should be
appropriately defined in the software.
To avoid reset from occurring when the port6 status changed interrupt enters
into interrupt vector or is used to wake-up the MCU, the WDT prescaler must be
set above 1:1 ratio.
Table 7 The Summary of the Initialized Values for Registers
Address Name Reset Type Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit Name C57 C56 C55 C54 C53 C52 C51 C50
Type ABABABAB - - - -
N/A IOC5 Power-On 0 1 0 1 0 1 0 1 1 1 1 1
/RESET and WDT 0 1 0 1 0 1 0 1 1 1 1 1
Wake-Up from Pin
Change
0 P 0 P 0 P 0 P P P P P
Bit Name C67 C66 C65 C64 C63 C62 C61 C60
N/A IOC6 Power-On 1 1 1 1 1 1 1 1
/RESET and WDT 1 1 1 1 1 1 1 1
Wake-Up from Pin
Change
P P P P P P P P
Bit Name C77 C76 C75 C74 C73 C72 C71 C70
N/A IOC7 Power-On 1 1 1 1 1 1 1 1
/RESET and WDT 1 1 1 1 1 1 1 1
Wake-Up from Pin
Change
P P P P P P P P
Bit Name /PHEN /INT TS TE PAB PSR2 PSR1 PSR0
N/A CONT Power-On 1 0 1 1 1 1 1 1
/RESET and WDT 1 P 1 1 1 1 1 1
Wake-Up from Pin
Change
P P P P P P P P
Bit Name - - - - - - - -
0x00 R0(IAR) Power-On U U U U U U U U
/RESET and WDT P P P P P P P P
Wake-Up from Pin
Change
P P P P P P P P
Bit Name - - - - - - - -
0x01 R1(TCC) Power-On 0 0 0 0 0 0 0 0
/RESET and WDT 0 0 0 0 0 0 0 0
Wake-Up from Pin
Change
P P P P P P P P
Bit Name - - - - - - - -
0x02 R2(PC) Power-On 1 1 1 1 1 1 1 1
/RESET and WDT 1 1 1 1 1 1 1 1
Wake-Up from Pin
Change
**0/P **0/P **0/P **0/P **0/P **0/P **0/P **0/P
Bit Name GP PS1 PS0 T P Z DC C
0x03 R3(SR) Power-On 0 0 0 1 1 U U U
/RESET and WDT 0 0 0 t t P P P
Wake-Up from Pin
Change
P P P t t P P P
Bit Name RSR.1 RSR.0 - - - - - -
0x04 R4(RSR) Power-On 0 0 U U U U U U
/RESET and WDT 0 0 P P P P P P