ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 114

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

Electrical characteristics
16.5
16.5.1
16.5.2
Table 62.
114/139
Symbol
t
t
f
f
DOGL
PORL
OSC
CPU
t
RL
Oscillator frequency
Operating frequency
External RESET
input pulse width
Internal power reset duration
Watchdog or low voltage reset
output pulse width
Clock and timing characteristics
Subject to general operating conditions for V
General timings
Table 61.
1. Data based on typical application software.
2. Time measured between interrupt event and interrupt vector fetch. Δt
Control timing characteristics
Control timings
Figure 46. Typ. I
Symbol
t
c(INST)
t
v(IT)
needed to finish the current instruction execution.
12
10
8
6
4
2
0
4
Parameter
4.2
Instruction cycle time
Interrupt reaction time
t
v(IT)
CPU timings
MHz f
Idd Run (mA) at fcpu=4 and 8MHz
= Δt
4.4
c(INST)
Parameter
DD
CPU
4.6
in RUN at 4 and 8
Vdd (V)
+ 10 t
4.8
CPU
(2)
5
5.2
Conditions
f
f
8MHz
4MHz
CPU
CPU
5.4
=8 MHz
=8 MHz
Conditions
DD
Figure 47. Typ. I
, f
CPU
10
8
6
4
2
0
4
, and T
4.2
2520
4096
Min
200
c(INST)
MHz f
A
Idd WFI (mA) at fcpu=4 and 8MHz
.
4.4
1.25
Min
250
10
2
is the number of t
DD
Value
CPU
4.6
Typ
300
in WAIT at 4 and 8
Vdd (V)
Typ
375
3
4.8
(1)
Max
24
5
8
1500
Max
2.75
CPU
12
22
5.2
ST7260xx
cycles
MHz
MHz
Unit
8MHz
4MHz
t
Unit
ns
ns
CPU
5.4
t
t
ns
μs
CPU
CPU