M37221M4H_15 Datasheet, PDF (20/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
<Bit allocation>
<State immediately after reset>
:
: Name
Function bit
0 : “0” immediately after reset
1 : “1” immediately after reset
: No function bit
0 ^{: Fix to this bit to “0”}
(do not write to “1”)
? : Indeterminate immediately
after reset
1 : Fix to this bit to “1”
(do not write to “0”)
Register
Processor status register (PS)
Program counter (PCH)
Program counter (PCL)
b7
NV
Bit allocation
TBD I
State immediately after reset
b0 b7
b0
ZC
? ? ? ?? 1? ?
Contents of address FFFF16
Contents of address FFFE16
Fig. 8.2.6 Internal State of Processor Status Register and Program Counter at Reset
Rev.1.00 Oct 01, 2002 page 18 of 110
REJ03B0134-0100Z