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PDF SAB88C166 Data sheet ( Hoja de datos )

Número de pieza SAB88C166
Descripción 16-Bit CMOS Single-Chip Microcontrollers with/without oscillator prescaler with 32 KByte Flash EPROM
Fabricantes Siemens Semiconductor Group 
Logotipo Siemens Semiconductor Group Logotipo



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No Preview Available ! SAB88C166 Hoja de datos, Descripción, Manual

Microcomputer Components
16-Bit CMOS Single-Chip Microcontrollers
with/without oscillator prescaler
with 32 KByte Flash EPROM
SAB 88C166/88C166W
Data Sheet 05.94

1 page




SAB88C166 pdf
SAB 88C166(W)
Pin Definitions and Functions
Symbol Pin
Input (I) Function
Number Output (O)
P4.0 –
P4.1
16 - 17 I/O
16 O
17 O
Port 4 is a 2-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For a pin
configured as input, the output driver is put into high-
impedance state.
In case of an external bus configuration, Port 4 can be used to
output the segment address lines:
P4.0
A16
Least Significant Segment Addr. Line
P4.1
A17
Most Significant Segment Addr. Line
XTAL1 20
XTAL2 19
I
O
XTAL1: Input to the oscillator amplifier and input to the
internal clock generator
XTAL2: Output of the oscillator amplifier circuit.
To clock the device from an external source, drive XTAL1,
while leaving XTAL2 unconnected. Minimum and maximum
high/low and rise/fall times specified in the AC Characteristics
must be observed.
BUSACT, 22
EBC1, 23
EBC0 24
I
I
I
VPP
RSTIN
23
27
I
RSTOUT 28
O
External Bus Configuration selection inputs. These pins are
sampled during reset and select either the single chip mode
or one of the four external bus configurations:
BUSACT EBC1 EBC0 Mode/Bus Configuration
0 0 0 8-bit demultiplexed bus
0 0 1 8-bit multiplexed bus
0 1 0 16-bit muliplexed bus
0 1 1 16-bit demultiplexed bus
1 0 0 Single chip mode
1 0 1 Reserved.
1 1 0 Reserved.
1 1 1 Reserved.
After reset pin EBC1 accepts the programming voltage for the
Flash EPROM as an “alternate function”:
Flash EPROM Programming Voltage VPP = 12 V.
Reset Input with Schmitt-Trigger characteristics. A low level at
this pin for a specified duration while the oscillator is running
resets the SAB 88C166(W). An internal pullup resistor permits
power-on reset using only a capacitor connected to VSS.
Internal Reset Indication Output. This pin is set to a low level
when the part is executing either a hardware-, a software- or a
watchdog timer reset. RSTOUT remains low until the EINIT
(end of initialization) instruction is executed.
Semiconductor Group
4

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SAB88C166 arduino
SAB 88C166(W)
FCR (FFA0H / D0H)
15 14 13 12 11 10
FWM
SET - - - - -
rw rw rw rw rw rw
SFR
98
BE
7
WDW
W
65
CKCTL
rw rw rw
Reset Value: 00X0H*)
43210
VPP FC FBUSY
REV VPP RPROT FEE FWE
r rw r/w rw rw
Bit
FWE
FEE
FBUSY
Function
Flash Write Enable Bit (see description below)
0 : Flash write operations (program / erase) disabled
1 : Flash write operations (program / erase) enabled
Flash Erase Enable Bit (Significant only, when FWE = ’1’, see description below)
0 : Flash programming mode selected
1 : Flash erase mode selected
Flash Busy Bit (On read accesses)
0 : No Flash write operation in progress
1 : Flash write operation in progress
RPROT
FCVPP
VPPREV
CKCTL
WDWW
BE
FWMSET
Flash Read Protection Activation Bit (On write accesses)
0 : Deactivates Flash read protection
1 : Activates Flash read protection, if this is enabled
Flash Control VPP Bit
0 : No VPP failure occurred during a Flash write operation
1 : VPP failure occurred during a Flash write operation
Flash VPP Revelation Bit
0 : No valid VPP applied to pin VPP
1 : VPP applied to pin VPP is valid
Internal Flash Timer Clock Control
Determines the width of an internal Flash write or erase pulse
Word / Double Word Writing Bit (significant only in programming mode)
0 : 16-bit programming operation
1 : 32-bit programming operation
Bank Erase Select (significant only in erasing mode)
Selects the Flash Bank to be erased
Flash Writing Mode Set Bit (see description below)
0 : Exit Flash writing mode, return to standard mode
1 : Stay in Flash writing mode
*) The reset value of bit VPPREV depends on the voltage on pin VPP.
Note: The FCR is no real register but is rather virtually mapped into the active address space of the
Flash memory while the Flash writing mode is active. In writing mode all direct (mem)
accesses refer to the FCR, while all indirect ([Rwn]) accesses refer to the Flash memory
array itself.
Semiconductor Group
10

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