Fujitsu FR81S User Manual
CHAPTER 27: UP/DOWN COUNTER
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : UP/DOWN COUNTER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
8
4. Registers
This section explains the registers of the up/down counter.
Correspondence between Pins and Channels
Table 4-1 shows the correspondence between channels and pins.
Table 4-1 Correspondence between Pins and Channels
Channel
number
External signal input pins
0
AIN0_0, AIN0_1
BIN0_0, BIN0_1
ZIN0_0, ZIN0_1,
ZIN0_2
ZIN0_2
1
AIN1_0, AIN1_1
BIN1_0, BIN1_1
ZIN1_0, ZIN1_1
ch.0 and ch.1 select the external pin used by the IO relocation function.
Registers Map
Table 4-2 lists the up/down counter register map.
Table 4-2 Registers Map
Address
Registers
Register function
+0
+1
+2
+3
0x0F70
RCRH0
RCRL0
UDCRH0
UDCRL0
Reload compare register upper 0
Reload compare register lower 0
Reload compare register lower 0
UP/down count register upper 0
UP/down count register lower 0
UP/down count register lower 0
0x0F74
CCR0
Reserved
CSR0
Counter control register 0
Counter Status register 0
0x0F80
RCRH1
RCRL1
UDCRH1
UDCRL1
Reload compare register upper 1
Reload compare register lower 1
Reload compare register lower 1
UP/down count register upper 1
UP/down count register lower 1
UP/down count register lower 1
0x0F84
CCR1
Reserved
CSR1
Counter control register 1
Counter Status register 1
MB91520 Series
MN705-00010-1v0-E
1015