HT45FH4M
Lithium Battery Backup Power ASSP MCU
Pin Assignment
CX/DX
1
20
19
VCC
VSS
V5
2
3
AX/BX
PB2
18
17
4
PB1/TP1_1
PB0/TP0_1
VDD
VSS
5
16
15
14
13
6
PB7
PB6
PA0/OVP/AN0
7
PA1/DAPWR/AN1/VREF
PA2/AN2
PA7/TP0_0/AN7/ICPCK/OCDSCK
8
PA6/INT1/TCK1/AN6/ICPDA/OCDSDA
9
PA3/OCP/AN3
PA4/AN4
12
11
10
PA5/INT0/TCK0/AN5
HT45FH4M
20 SSOP-A
Note:ꢀ1.ꢀTheꢀHT45FH4MꢀI/Oꢀlines,ꢀPB5/OUTL,ꢀPB4/OUTHꢀandꢀPB3/TP1_0,ꢀareꢀinternallyꢀ
connectedꢀtoꢀtheꢀlevelꢀshiftꢀinputs,ꢀA,ꢀCꢀandꢀENBF,ꢀrespectively.
2.ꢀIfꢀtheꢀpin-sharedꢀpinꢀfunctionsꢀhaveꢀmultipleꢀoutputsꢀsimultaneously,ꢀitsꢀpinꢀnamesꢀatꢀtheꢀ
rightꢀsideꢀofꢀtheꢀ“/”ꢀsignꢀcanꢀbeꢀusedꢀforꢀhigherꢀpriority.
3.ꢀTheꢀ20SSOP-AꢀpackageꢀisꢀforꢀtheꢀrealꢀIC,ꢀtheꢀ20SOP-AꢀpackageꢀisꢀforꢀtheꢀOCDSꢀEVꢀIC.
Rev. 1.10
8
�anꢀaꢁꢂ 1ꢃꢄ ꢅ01ꢆ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
