UPSD3254 STMICROELECTRONICS [STMicroelectronics], UPSD3254 Datasheet - Page 165

• Manufacturer Part Number: UPSD3254
• Description: Flash Programmable System Devices with 8032 Microcontroller Core
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Figure 85. Reset (RESET) Timing
Table 134. Reset (RESET) Timing (5V Devices)
Note: 1. Reset (RESET) does not reset Flash memory Program or Erase cycles.
Table 135. Reset (RESET) Timing (3V Devices)
Note: 1. Reset (RESET) does not reset Flash memory Program or Erase cycles.
Table 136. V
Note: 1. V
Table 137. V
Note: 1. V
t
t
t
t
t
t
t
t
t
t
t
t
NLNH
NLNH–PO
NLNH–A
OPR
NLNH
NLNH–PO
NLNH–A
OPR
BVBH
BXBL
BVBH
BXBL
Symbol
Symbol
Symbol
Symbol
V
RESET
2. Warm RESET aborts Flash memory Program or Erase cycles, and puts the device in READ Mode.
2. Warm RESET aborts Flash memory Program or Erase cycles, and puts the device in READ Mode.
CC
STBYON
STBYON
STBYON
STBYON
RESET Active Low Time
Power-on Reset Active Low Time
Warm RESET
RESET High to Operational Device
RESET Active Low Time
Power-on Reset Active Low Time
Warm RESET
RESET High to Operational Device
V
V
Low
V
V
Low
timing is measured at V
timing is measured at V
STBY
STBY
STBY
STBY
Detection to V
Off Detection to V
Detection to V
Off Detection to V
Definitions Timing (5V Devices)
Timing (3V Devices)
Power-On Reset
V
t NLNH-PO
CC
(min)
(2)
(2)
Parameter
Parameter
Parameter
Parameter
STBYON
CC
STBYON
CC
ramp rate of 2ms.
ramp rate of 2ms.
(1)
(1)
STBYON
STBYON
UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
Output High
Output High
Output
Output
t OPR
Conditions
Conditions
Conditions
Conditions
(Note 1)
(Note 1)
(Note 1)
(Note 1)
Min
Min
Warm Reset
t NLNH-A
Min
Min
150
300
t NLNH
25
25
1
1
Typ
Typ
20
20
20
20
Max
Max
120
300
t OPR
Max
Max
AI02866b
165/175
Unit
Unit
Unit
Unit
ms
ms
ns
ns
ns
ns
µs
µs
µs
µs
s
s