HMS87C5216 ETC1 [List of Unclassifed Manufacturers], HMS87C5216 Datasheet - Page 69

• Manufacturer Part Number: HMS87C5216
• Description: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

(5) S/W flow chart example after Reset using SRAM Back-up
17.4 Low Voltage Indicator Register (LVIR)
Low Voltage Indication Register (LVIR) is read only Register. It
is useful to display the consumption of Batteries. If VDD power
level is below a cirtain level which is higher than low voltage de-
tection level ( refer to Figure 17-6 ) , The bit of LVIR register
SEP. 2004 Ver 1.01
Figure 17-7 S/W Flow Chart Example for SRAM Back-
initial value
R / W
LVIR
bit
7
-
-
-
(RAM Pattern, Check sum..)
6
-
-
-
Check the SRAM value
Stack Pointer initialize
SRAM DATA IS VALID?
Use saved SRAM
RESET
Y
value
5
-
-
-
4
-
-
-
N
could be set according to the VDD level sequentially. The VDD
dection levels for Indication are two , that is , Bit1 and Bit0 of
LVIR Register. The detection level of Bit0 is higer than Bit1.
3
-
-
-
Clear All Ram area
2
-
-
-
LVIR1
1
R
0
LVIR0
up
0
R
0
<00EF h>
HMS87C5216