UPD78F1502AGK-GAK-AX Datasheet, PDF (812/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 22 RESET FUNCTION
Reset function
Low-voltage detector
DMA controller
Interrupt
Regulator
BCD correction circuit
(BCD)
Table 22-2. Hardware Statuses After Reset Acknowledgment (4/4)
Hardware
Reset control flag register (RESF)
Low-voltage detection register (LVIM)
Low-voltage detection level select register (LVIS)
SFR address registers 0, 1 (DSA0, DSA1)
RAM address registers 0L, 0H, 1L, 1H (DRA0L, DRA0H, DRA1L, DRA1H)
Byte count registers 0L, 0H, 1L, 1H (DBC0L, DBC0H, DBC1L, DBC1H)
Mode control registers 0, 1 (DMC0, DMC1)
Operation control registers 0, 1 (DRC0, DRC1)
Request flag registers 0L, 0H, 1L, 1H, 2L, 2H (IF0L, IF0H, IF1L, IF1H,
IF2L, IF2H)
Mask flag registers 0L, 0H, 1L, 1H, 2L, 2H (MK0L, MK0H, MK1L,
MK1H, MK2L, MK2H)
Priority specification flag registers 00L, 00H, 01L, 01H, 02L, 02H, 10L,
10H, 11L, 11H, 12L, 12H (PR00L, PR00H, PR01L, PR01H, PR10L,
PR10H, PR11L, PR11H, PR02L, PR02H, PR12L, PR12H)
External interrupt rising edge enable registers 0, 1 (EGP0, EGP1)
External interrupt falling edge enable registers 0, 1 (EGN0, EGN1)
Regulator mode control register (RMC)
BCD correction result register (BCDADJ)
Status After Reset
Acknowledgment^{Note 1}
Undefined^{Note 2}
00H^{Note 3}
0EH^{Note 2}
00H
00H
00H
00H
00H
00H
FFH
FFH
00H
00H
00H
Undefined
Notes 1.
2.
During reset signal generation or oscillation stabilization time wait, only the PC contents among the hardware
statuses become undefined. All other hardware statuses remain unchanged after reset.
These values vary depending on the reset source.
Reset Source RESET Input Reset by POC Reset by Execution of Reset by WDT Reset by LVI
Register
Illegal Instruction
RESF
TRAP bit
Cleared (0)
Cleared (0)
Set (1)
Held
Held
WDRF bit
Held
Set (1)
Held
LVIRF bit
Held
Held
Set (1)
LVIS
Cleared (0EH) Cleared (0EH) Cleared (0EH)
Cleared (0EH) Held
3. This value varies depending on the reset source and the option byte.
Remark The SFR and 2nd SFR mounted depend on the product. Refer to 3.2.4 Special function registers (SFRs)
and 3.2.5 Extended special function registers (2nd SFRs: 2nd Special Function Registers).
R01UH0004EJ0501 Rev.5.01
796
Jun 20, 2011