參數(shù)資料
型號: P83CL882
廠商: NXP Semiconductors N.V.
英文描述: 80C51 Ultra Low Power ULP telephony controller
中文描述: 80C51的超低功耗無鉛汽油電話控制器
文件頁數(shù): 30/88頁
文件大?。?/td> 328K
代理商: P83CL882
2001 Jun 19
30
Philips Semiconductors
Product specification
80C51 Ultra Low Power (ULP) telephony controller
P83CL882
Table 35
Port I/O configuration types
‘n’ indicates the specific port number (0, 1, 3 and 4).
Table 36
Reset state of port related SFRs
Note
1.
This means all ports, except P0.2, P0.3, P0.4, P1.6 and P1.7 are initialized in standard port configuration driving a
weak logic 1. Port 0.2 and P0.3 are initialised as open-drain outputs, floating. P0.4 is initialised as bidirectional,
driving a strong logic 0. I
2
C-bus I/Os P1.6 and P1.7 are initialised in open-drain configuration, floating. The
configuration registers (P1CFGA.7 to 6 and P1CGB.7 to 6) are however configured as standard port configuration
but the connections to the port PMOS transistors are not present.
TYPE
PnCFGA
PnCFGB
NORMAL PORTS
I
2
C-BUS PORTS
Open-drain
Standard port
High-impedance input
Push-pull
0
1
0
1
0
0
1
1
open-drain
quasi-bidirectional
high-impedance input
push-pull
open-drain
open-drain
high-impedance input
open-drain
SFR
DESCRIPTION
SFR ADDRESS
(HEX)
STATE AFTER RESET
(1)
P0
P0CFGA
P0CFGB
P1
P1CFGA
P1CFGB
P3
P3CFGA
P3CFGB
Port 0 output data
Port 0 Configuration A
Port 0 Configuration B
Port 1 output data
Port 1 Configuration A
Port 1 Configuration B
Port 3 output data
Port 3 Configuration A
Port 3 Configuration B
80
8E
8F
90
9E
9F
B0
BE
BF
1110 1111
1111 0011
0000 0000
1111 1111
1111 1111
0000 0000
1111 1111
1111 1111
0000 0000
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