2 POWER SUPPLY, RESET, AND CLOCKS
S1C17F13 TeChniCal Manual
Seiko epson Corporation
2-1
(Rev. 1.0)
Power Supply, Reset, and Clocks
2
The power supply, reset, and clocks in this IC are managed by the embedded power generator, system reset control-
ler, and clock generator, respectively.
Power Generator (PWG)
2.1
Overview
2.1.1
PWG is the power generator that controls the internal power supply system to drive this IC with stability and low
power. The main features of PWG are outlined below.
• Embedded V
D1
regulator
- The V
D1
regulator generates the V
D1
voltage to drive internal circuits, this makes it possible to keep current
consumption constant independent of the V
DD
voltage level.
- The V
D1
regulator supports two operation modes, normal mode and economy mode, and setting the V
D1
regu-
lator into economy mode at light loads helps achieve low-power operations.
• Embedded V
OSC
regulator
- The V
OSC
regulator drives the low-speed oscillator circuit in low power consumption and achieves stabilized
low-speed clock that is used for timers such as RTC.
• Embedded voltage booster for generating the Flash erasing/programming voltage
Figure 2.1.1.1 shows the PWG configuration.
PWG
Internal logic and
high-speed oscillator
circuits
Low-speed
oscillator circuit
V
D1
regulator
V
DD
V
D1
V
D1
V
SS
VD1ECO
V
OSC
regulator
V
OSC
V
OSC
Flash voltage
booster
C
1P
V
PP
C
1N
C
1H
C
2P
C
2N
Flash memory
C
PW1
C
PW2
C
PW3
C
PW4
C
PW5
C
PW6
V
SS
V
DD
V
SS
V
PP
C
PW7
1.1.1 PWG Configuration
Figure 2.