
1996 Dec 11
73
Philips Semiconductors
Preliminary specification
Low voltage 16-bit microcontroller
P90CL301BFH (C100)
25 PIN STATES IN VARIOUS MODES
Table 94 describes the function, I/O, type and state in various modes - RESET, Power-down, HALT, ONCE and BPE
(Bus Pull-up Enable) - of the pins.
Table 94
Pin states in various modes
PIN
FUNCTION
I/O
(1)
TYPE
(2)
STATE
(3)
BPE ON
RESET
PD
HALT
ONCE
A22 to A19
PCS0 to PCS3
A18 to A1
AD7 to AD1
D7 to D0
D15 to D8
PL7 to PL0
AS
LDS
UDS
A0
AD0
R/W
TROM
DTACK
RESET
address bus
8051 chip-select
address bus
8051 data bus
lower 8-bits of data bus
upper 8-bits of data bus
port PL
address strobe
low data strobe
upper data strobe
address 0
8051 address/data 0
read write strobe
Test-ROM mode
data transfer acknowledgement
CPU peripheral reset
peripheral reset output
external power-on-reset
reset input; HALT input
peripheral reset; fault output
data bus size
emulation NMIN acknowledgement
second port pin 0
UART1 receive
interrupt input 0
second port pin 1
UART1 transmit
interrupt input 1
external clock Timer 0
second port pin 2
UART0 receive
interrupt input 2
timer capture 2
second port pin 3
UART0 transmit
O
O
O
I/O
I/O
I/O
I/O
O
O
O
O
I/O
O
I
I
I
OD
I
I
OD
I
OD
I/O
I/O
I
I/O
O
I
I
I/O
I/O
I
I
I/O
I/O
TSW4
TS4
TSW4
TSW4
TSW4
TSW4
WP4
TS4
TS4
TS4
TSW4
TSW4
TS4
UP2
N
N
OD8
RS
N
OD8
N
OD8
WP2
WP2
N
WP2
WP2
N
N
WP2
N
N
N
WP2
WP2
Z
Z
Z
Z
H
H
H
H
Z
L
L
Z
W
W
W
W
Z
H
Z
Z
Z
W
S
H
H
H
H
H
Z
Z
Z
S
S
S
S
S
S
S
Z
Z
Z
Z
Z
Z
W
Z
Z
Z
Z
Z
Z
Z
Z
Z
W
W
W
W
W
W
W
Z
Z
Z
Z
W
Z
Z
Z
Z
Z
Z
Z
Z
Z
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
RESETIN
HALT
BSIZE
NMIACK
SP0
RX1
INT0
SP1
TX1
INT1
CLK0
SP2
RX0
INT2
CP2
SP3
TX0