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EM78P221/2N
8-Bit Microcontroller with OTP ROM
34 •
Product Specification (V1.0) 10.19.2007
(This specification is subject to change without further notice)
Address Name
Reset Type
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit Name
- - - - NRHL NRE LVR1 LVR0-
Power-on
U U U U 1 1 1 1
/RESET & WDT
P P P P 1 1 1 1
0x07
Bank 3-R7
(only for
ICE)
Wake-up from
Pin Change
P P P P P P P P
Bit Name
- - - - - - - -
Power-on
U U U U U U U U
/RESET & WDT
P P P P P P P P
0x10 ~
0x1F
R10 ~ R1F
Wake-up from
Pin Change
P P P P P P P P
Bit Name
- - - - - - - -
Power-on
U U U U U U U U
/RESET & WDT
P P P P P P P P
0x20 ~
0x3F
Bank 0~3
R20 ~ R3F
Wake-up from
Pin Change
P P P P P P P P
Legend: “×” = not used “P” = previous value before reset
“u” = unknown or don’t care “t” = check “Reset Type” Table in Section 6.5.2
6.5.1.3 Controller Reset Block Diagram
WDT Timeout
Oscillator
D Q
CLK
CLR
WDT
VDD
Setup time
Reset
CLK
/RESET
Power-on Reset
Voltage Detector
WTE
Fig. 6-7 Controller Reset Block Diagram