ST10F276Z5 STMicroelectronics, ST10F276Z5 Datasheet - Page 124
ST10F276Z5
Manufacturer Part Number
ST10F276Z5
Description
16-BIT MICROCONTROLLER WITH MAC UNIT, UP TO 832 KBYTES FLASH MEMORY AND UP TO 68 KBYTES RAM
Manufacturer
STMicroelectronics
Datasheet
1.ST10F276Z5.pdf
(239 pages)
Specifications of ST10F276Z5
Single Voltage Supply
5V ±10% (embedded regulator for 1.8 V core supply)
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System reset
19.7
124/239
Figure 36. SW / WDT bidirectional RESET (EA=0) followed by a HW RESET
Reset circuitry
Internal reset circuitry is described in
resistor of 50kΩ to 250kΩ (The minimum reset time must be calculated using the lowest
value).
It also provides a programmable (BDRSTEN bit of SYSCON register) pull-down to output
internal reset state signal (synchronous reset, watchdog timer reset or software reset).
This bidirectional reset function is useful in applications where external devices require a
reset signal but cannot be connected to RSTOUT pin.
This is the case of an external memory running codes before EINIT (end of initialization)
instruction is executed. RSTOUT pin is pulled high only when EINIT is executed.
The RPD pin provides an internal weak pull-down resistor which discharges external
capacitor at a typical rate of 200µA. If bit PWDCFG of SYSCON register is set, an internal
pull-up resistor is activated at the end of the reset sequence. This pull-up will charge any
capacitor connected on RPD pin.
The simplest way to reset the device is to insert a capacitor C1 between RSTIN pin and V
and a capacitor between RPD pin and V
and V
250kΩ (the minimum reset time must be determined by the lowest value). Select C1 that
produce a sufficient discharge time to permit the internal or external oscillator and / or
internal PLL and the on-chip voltage regulator to stabilize.
DD
RSTIN
P0[7:2]
RSTOUT
RSTF
(After Filter)
P0[15:13]
P0[12:8]
P0[1:0]
ALE
RST
. The input RSTIN provides an internal pull-up device equalling a resistor of 50kΩ to
≤ 500 ns
≥ 50 ns
Figure
SS
not transparent
not transparent
not transparent
1024 TCL
transparent
(C0) with a pull-up resistor R0 between RPD pin
39. The RSTIN pin provides an internal pull-up
At this time RSTF is sampled LOW
so HW Reset is entered
not t.
not t.
≤ 500 ns
8 TCL
≥ 50 ns
ST10F276Z5
SS
,
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