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Chapter 30 I/O Ports
3.Port Register Settings
3.6 Programmable Pull-Up/Pull Down Resistors
The Ports listed in the following table have 50 kOhm Pull-Up resistors, which can be enabled bit-wise. The
function is enabled by the Port Pull Enable Registers (PPER) and controlled by the Port Pull Control Register
(PPCR). The PPCR selects Pull-Up or Pull-Down. The Pull-Up/Pull-Down is disabled automatically in the STOP-
HiZ mode (STCR:STOP and STCR:HIZ set).
EPILR16 0E90h - - - - - - - - ---- ----
EPILR17 0E91h - - - - - - - - ---- ----
EPILR18 0E92h - - - - - - - - ---- ----
EPILR19 0E93h - - - - - - - - ---- ----
EPILR20 0E94h - - - - - - - - ---- ----
EPILR21 0E95h - - - - - - - - ---- ----
EPILR22 0E96h - - - - - - - - ---- ----
EPILR23 0E97h - - - - - - - - ---- ----
EPILR24 0E98h - - - - - - - - ---- ----
EPILR25 0E99h - - - - - - - - ---- ----
EPILR26 0E9Ah - - - - - - - - ---- ----
EPILR27 0E9Bh - - - - - - - - ---- ----
EPILR28 0E9Ch - - - - - - - - ---- ----
EPILR29 0E9Dh - - - - - - - - ---- ----
EPILR30 0E9Eh - - - - - - - - ---- ----
EPILR31 0E9Fh - - - - - - - - ---- ----
EPILR32 0EA0h - - - - - - - - ---- ----
EPILR33 0EA1h - - - - - - - - ---- ----
EPILR34 0EA2h - - - - - - - - ---- ----
EPILR35 0EA3h - - - - - - - - ---- ----
R/W R/W R/W R/W R/W R/W R/W R/W
Bit
Port Pull-Up/Pull-Down Enable Registers
0 (default) 1
PPERx.y Pull-Up/Pull-Down disabled Pull-Up/Pull-Down enabled
Addr 7 6 5 4 3 2 1 0 initial
PPER00 0EC0h PPER00.7 PPER00.6 PPER00.5 PPER00.4 PPER00.3 PPER00.2 PPER00.1 PPER00.0 0000 0000
PPER01 0EC1h PPER01.7 PPER01.6 PPER01.5 PPER01.4 PPER01.3 PPER01.2 PPER01.1 PPER01.0 0000 0000