Specifications

CY8C21123/CY8C21223/CY8C21323
Document Number: 38-12022 Rev. *Y Page 21 of 46
Figure 12. Basic Switch Mode Pump Circuit
DC POR and LVD Specifications
Table 19 lists the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75 V to 5.25 V and
–40 °C  T
A
 85 °C, 3.0 V to 3.6 V and –40 °C  T
A
 85 °C, or 2.4 V to 3.0 V and –40 °C  T
A
 85 °C, respectively. Typical parameters
apply to 5 V, 3.3 V, or 2.7 V at 25 °C and are for design guidance only.
Table 19. DC POR and LVD Specifications
Symbol Description Min Typ Max Units Notes
V
PPOR0
V
PPOR1
V
PPOR2
V
DD
value for PPOR trip
PORLEV[1:0] = 00b
PORLEV[1:0] = 01b
PORLEV[1:0] = 10b
–
–
–
2.36
2.82
4.55
2.40
2.95
4.70
V
V
V
V
DD
must be greater than or equal to
2.5 V during startup, reset from the
XRES pin, or reset from watchdog.
V
LVD0
V
LVD1
V
LVD2
V
LVD3
V
LVD4
V
LVD5
V
LVD6
V
LVD7
V
DD
value for LVD trip
VM[2:0] = 000b
VM[2:0] = 001b
VM[2:0] = 010b
VM[2:0] = 011b
VM[2:0] = 100b
VM[2:0] = 101b
VM[2:0] = 110b
VM[2:0] = 111b
2.40
2.85
2.95
3.06
4.37
4.50
4.62
4.71
2.45
2.92
3.02
3.13
4.48
4.64
4.73
4.81
2.51
[7]
2.99
[8]
3.09
3.20
4.55
4.75
4.83
4.95
V
V
V
V
V
V
V
V
V
PUMP0
V
PUMP1
V
PUMP2
V
PUMP3
V
PUMP4
V
PUMP5
V
PUMP6
V
PUMP7
V
DD
value for PUMP trip
VM[2:0] = 000b
VM[2:0] = 001b
VM[2:0] = 010b
VM[2:0] = 011b
VM[2:0] = 100b
VM[2:0] = 101b
VM[2:0] = 110b
VM[2:0] = 111b
2.45
2.96
3.03
3.18
4.54
4.62
4.71
4.89
2.55
3.02
3.10
3.25
4.64
4.73
4.82
5.00
2.62
[9]
3.09
3.16
3.32
[10]
4.74
4.83
4.92
5.12
V
V
V
V
V
V
V
V
Battery
C1
D1
+
PSoC
TM
Vdd
Vss
SMP
V
BAT
V
PUMP
L
1
V
DD
Notes
7. Always greater than 50 mV above V
PPOR
(PORLEV = 00) for falling supply.
8. Always greater than 50 mV above V
PPOR
(PORLEV = 01) for falling supply.
9. Always greater than 50 mV above V
LVD0
.
10. Always greater than 50 mV above V
LVD3
.