CY8C21123_09 Datasheet, PDF (21/36 Pages) Cypress Semiconductor – PSoC Programmable System-on-Chip

CY8C21123, CY8C21223, CY8C21323
Figure 12. Basic Switch Mode Pump Circuit
D1
V_BAT ⁺
L₁
Battery
Vdd
V_PUMP
C1
SMP
PSoC^TM
V ss
DC POR and LVD Specifications
Table 21 lists the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V and -40°C
≤ T_A ≤ 85°C, 3.0V to 3.6V and -40°C ≤ T_A ≤ 85°C, or 2.4V to 3.0V and -40°C ≤ T_A ≤ 85°C, respectively. Typical parameters apply to
5V, 3.3V, or 2.7V at 25°C and are for design guidance only.
Table 21. DC POR and LVD Specifications
Symbol
Description
V_PPOR0
V_PPOR1
V_PPOR2
V_LVD0
V_LVD1
V_LVD2
V_LVD3
V_LVD4
V_LVD5
V_LVD6
V_LVD7
V_PUMP0
V_PUMP1
V_PUMP2
V_PUMP3
V_PUMP4
V_PUMP5
V_PUMP6
V_PUMP7
Vdd Value for PPOR Trip
PORLEV[1:0] = 00b
PORLEV[1:0] = 01b
PORLEV[1:0] = 10b
Vdd 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
Vdd 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
Min
Typ
Max Units
Notes
Vdd must be greater than or equal to
2.36 2.40
V 2.5V during startup, reset from the
–
2.82 2.95
V XRES pin, or reset from Watchdog.
4.55 4.70
V
2.40
2.45 2.51^[7]
V
2.85
2.92 2.99^[8]
V
2.95 3.02 3.09
V
3.06 3.13 3.20
V
4.37 4.48 4.55
V
4.50 4.64 4.75
V
4.62 4.73 4.83
V
4.71 4.81 4.95
V
2.45
2.55 2.62^[9]
V
2.96 3.02 3.09
V
3.03 3.10 3.16
V
3.18
3.25 3.32^[10]
V
4.54 4.64 4.74
V
4.62 4.73 4.83
V
4.71 4.82 4.92
V
4.89 5.00 5.12
V
Notes
7. Always greater than 50 mV above VPPOR (PORLEV = 00) for falling supply.
8. Always greater than 50 mV above VPPOR (PORLEV = 01) for falling supply.
9. Always greater than 50 mV above VLVD0.
10. Always greater than 50 mV above VLVD3.
Document Number: 38-12022 Rev. *K
Page 21 of 36
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