upd75112 Renesas Electronics Corporation., upd75112 Datasheet - Page 28

• Manufacturer Part Number: upd75112
• Description: 4-bit Single Chip-microcomputer
• Manufacturer: Renesas Electronics Corporation.

28
The power-on reset circuit generates the internal reset
signal by rising of supply voltage. This pulse is used in
the three ways according to the specification of mask
option of SWA and SWB shown in Figure 8-1 (refer to
"11. Mask Option Selection").
Reset operations are shown in Figures 8-2 and 8-3.
Figure 8-2 Reset Operation by Power-on Reset
Figure 8-3 Reset Operation by Reset Input
Each hardware status after reset operation is shown in
Table 8-1.
PD75112, 75116
* The wait time does not include a time from the generation of
RES signal to the start of oscillation.
Supply Voltage
Internal Reset
Signal (RES)
RESET Input
0V
Operation or
Standby Mode
Internal Reset
Operation
Internal Reset
Operation
Wait *
(Approx. 31.3 ms:4.19 MHz)
Wait *
(Approx. 31.3 ms:4.19 MHz)
HALT Mode
HALT Mode
Operating Mode
Operating Mode