st10f269z1 STMicroelectronics, st10f269z1 Datasheet - Page 120

• Manufacturer Part Number: st10f269z1
• Description: St10f269 16-bit Mcu With Mac Unit, 256k Byte Flash Memory And 12k Byte Ram
• Manufacturer: STMicroelectronics

18 - SYSTEM RESET
Figure 59 : Minimum External Reset Circuitry
Figure 60 : External Reset Hardware Circuitry
Table 38 : PORT0 Latched Configuration for the Different Resets
Table 39 : PORT0 Bits Latched into the Different Registers After Reset
Notes: 1. Not latched from PORT0.
120/184
PORT0 bit
BUSCON0
PORT0 bit
X: Pin is sampled
-: Pin is not sampled
Software Reset
Watchdog Reset
Short Hardware Reset
Long Hardware Reset
Power-On Reset
SYSCON
RP0H
Internal
Name
Nebr.
Logic
Sample event
2. Only RP0H low byte is used and the bit-fields are latched from PORT0 high byte to RP0H low byte.
2
V
R0
C0
DD
V
R0
C0
CLKCFG CLKCFG CLKCFG SALSEL SALSEL CSSEL
DD
+
X
X
X
h7
1
1
1
+
To Clock Generator
h6
X
X
X
1
1
1
RPD
ST10F269
RPD
RSTOUT
ST10F269
X
X
X
h5
1
1
1
X
X
-
-
-
To Port 4 Logic
X
X
X
h4
X
X
-
-
-
1
1
1
RSTOUT
RSTIN
X
X
-
-
-
X
X
h3
RSTIN
-
1
1
ACT0
X
X
X
X
X
BUS
To Port 6 Logic
X
X
h2
V
1
1
DD
C1
4
X
X
X
X
X
BYTDIS
CSSEL
CTL0
+
ALE
X
h1
Open - drain
Inverter
1
X
X
X
X
X
4
b)
R2
3
WRC BUSTYP BUSTYP
X
X
X
h0
-
1
1
1
X
X
X
X
X
WRCFG
CLKCFG CLKCFG CLKCFG SALSEL SALSEL CSSEL CSSEL WRC
D2
a)
BTYP
X
I7
PORT0
X
X
X
X
X
1
Hardware
Hardware
3
External
External
a) Manual hardware reset1
b) For automatic power-up and
X
X
X
X
X
BTYP
interruptible power-down mode
X
X
I6
External
Reset Source
1
1
X
X
X
X
X
X
X
X
I5
R
D1
1
1
1
X
X
X
-
-
Internal
BSL
X
X
I4
X
X
X
1
1
-
-
+
V
R1
DD
C1
X
X
X
X
X
X
I3
-
-
R
1
1
1
X
X
X
-
-
X
X
X
I2
ST10F269
R
1
1
1
Internal Internal
X
X
X
-
-
ADP
X
X
I1
1
1
X
X
X
-
-
EMU
X
X
I0
1
1